Abstract API
↗A practical API suite for IP, email, phone and other validation tasks.
Free API keys with product-specific monthly quotas; common APIs include limited requests for testing.
DIRECTORY_01
An independent directory built to make genuinely useful developer tools easier to discover. We review every entry and keep the catalog focused on products developers can actually use.
A practical API suite for IP, email, phone and other validation tasks.
Free API keys with product-specific monthly quotas; common APIs include limited requests for testing.
Simple, cookie-free website analytics with AI traffic, funnels and SEO context from Ahrefs.
Free with Ahrefs Free: up to 1M events/month per verified project, unlimited sites, cookie-free tracking; no card required.
Secure code, cloud and runtime from one developer-focused platform
Developer plan at $0 forever, no credit card: 2 users, 10 repositories, 1 domain, 1 cloud account, 10 AI AutoFixes/month and 250,000 protected requests/month.
Managed data platform with Postgres, Kafka, Redis, OpenSearch and more, across multiple clouds.
$300 trial credits to explore all services, no card required.
Digital analytics for user journeys, behavior and product experiments.
Starter: up to 50k monthly tracked users with core analytics, session replay and feature flags.
Publish Docker containers in temporary slots designed for demos.
Free hosting for demos with temporary Docker containers; slots expire and are not intended for production.
Hosted identity with social login, SSO and extensible authentication flows.
Up to 25k monthly active users, social connections, passwordless login and 5 organizations.
Store and explore event data and logs with fast queries and dashboards.
500 GB-hours of query time and 25 GB ingest/month, with 30-day retention.
Affordable S3-compatible object storage for backups and active data
10 GB free storage, free egress up to 3x average monthly storage, and free Class A, B and C API calls. Class D: 2,500 free calls per day, then $0.004 per 10,000 calls.
Collect form submissions and automate follow-up without backend code
Free plan: 1 endpoint, 50 submissions/month, 30-day retention, AJAX and Zapier, no credit card required. Paid plans include a 14-day trial; Starter costs $12.50/month.
Intercept, mock and debug HTTP requests without writing a single line of backend code.
50 requests per day per endpoint on the free plan.
Uptime checks, logs, incident response and status pages in one place.
10 monitors, 3-minute checks, 1 status page, 1 GB logs/month and 3-day retention.
Evaluate AI applications, compare prompts and manage test datasets.
1 GB of logs/month, 10k scores and experiments, prompt playground and unlimited users.
Transactional email, campaigns and contact management in one platform.
300 emails/day, unlimited contacts, transactional email and basic campaign tools.
Flexible pipelines with hosted orchestration and your own build agents.
Up to 3 users and 5k job minutes/month; jobs run on your own agents and infrastructure.
High-performance edge network with CDN, object storage and serverless compute at competitive prices.
14-day free trial with all features included. No permanent free tier. Paid plans start at $1/month minimum with usage-based billing.
A focused newsletter platform for writers, creators, and small teams
Free for the first 100 active subscribers, no credit card required. Above 100, pricing is subscriber-based and add-ons start at $9/month.
Create visual assets quickly with templates and browser-based editing.
250k+ templates, 1M+ stock assets, 5 GB cloud storage and standard design tools.
Run open AI models through an OpenAI-compatible API optimized for very fast inference.
Free inference tier with access to all Cerebras-powered models, lower rate limits and community support.
Code-first synthetic monitoring for web apps and APIs using Playwright.
10k API checks and 1,500 browser checks/month, 1-minute frequency and 7-day retention.
Flexible hosted pipelines with multiple executors and parallel jobs.
30k credits/month, up to 5 active users and 80 concurrent jobs on supported resource classes.
Free heatmaps and session recordings for understanding website behavior.
Completely free: unlimited projects, heatmaps and session recordings with no traffic cap.
Authentication and user management with polished prebuilt components.
Hobby: 50k monthly retained users per app, up to 5 dashboard seats and 100 organizations.
Tasks, docs, goals and project views in a highly configurable workspace.
Unlimited tasks and members, 100 MB storage, collaborative docs and Kanban boards.
Deploy and manage applications in your cloud without handling all server operations yourself.
1 server, 1 static site, 5 deployments/day and 50 build minutes; cloud infrastructure is billed separately.
A global platform for DNS, CDN, edge functions, storage and web security.
Workers Free: 100,000 requests/day; Pages includes 500 builds/month plus unlimited static sites and static bandwidth.
Privacy-first web analytics from Cloudflare: no cookies, no personal data, free for any site.
Completely free privacy-first analytics for any site: no cookies, no personal data collection and no traffic cap.
S3-compatible object storage without egress fees
10 GB-month of Standard storage, 1 million Class A requests and 10 million Class B requests per month, with free egress. An R2 subscription is required.
Run serverless open-source AI models on Cloudflare's global GPU network.
10,000 Neurons of AI inference per day at no charge across the available model catalog.
Upload, transform, optimize and deliver images and video through a CDN.
25 monthly credits for image/video transformations, storage and bandwidth, with 3 users.
Distributed SQL database with high availability, ACID consistency and Postgres compatibility.
10 GB storage and 50 million RUs per month on the free serverless plan.
Turn code coverage uploads into pull-request checks and visual reports.
Free for open-source projects; private-code Basic plan covers 1 user with unlimited repositories and uploads.
AI code reviews for pull requests, IDEs and the command line, with free access for open-source projects.
Unlimited public and private repositories, PR summaries and limited reviews in IDE/CLI; open source gets Pro+ features.
Trace, evaluate and test LLM applications throughout development.
Free cloud tier for one developer with limited monthly traces; the open-source self-hosted edition is unlimited.
Budget-friendly VPS hosting with generous resource allocations at very competitive prices.
Starting at 5.99 EUR/month for 4 vCPU, 8 GB RAM, 200 GB SSD and 32 TB outbound transfer.
API-first content infrastructure with a mature editor and ecosystem.
10 users, 2 roles, 2 locales, 1M API calls and 50 GB CDN bandwidth/month.
Reactive TypeScript backend with database, functions, sync, search and file storage
Free & Starter includes 1M function calls and 20 GB-hours of compute per month, 0.5 GB database storage, 1 GB file storage, 1 GB egress and 1,000 concurrent sessions.
Self-host your applications with an open-source Heroku alternative on your own VPS.
Free and open source. Self-hosted on your own VPS with unlimited projects, databases and deployments.
Professional calendar with time zones, scheduling links and Notion integration
Free with desktop and mobile apps for Google Calendar, Outlook and Apple iCloud-synced calendars. No usage cap or paid tier is published; a Notion account is required.
Monitor cron jobs, websites, APIs and heartbeats with developer-friendly alerts
Free plan: 5 monitors, email and Slack alerts, a status page, 5-minute checks and 50 subscribers. Business: 14-day trial, then $2 per monitor and $5 per user per month.
Headless CMS with GraphQL delivery and a built-in image pipeline.
3 team members, 2 environments, 300 records, 10 GB bandwidth and 100k API calls/month.
Open-source Git-based CMS for editing content in static-site repositories
Free forever and self-hosted, no service-side quota. Decap Turbo early access starts at $37/month, or $29/month billed yearly, up to 3 users, 1 project; waitlist is free.
Run JavaScript and TypeScript close to users on a global edge network.
Free plan: 1M requests/month, 20 GB egress, 15h CPU time, 350 GB-h memory time, 1 GiB KV storage, 50 custom domains per org.
Automated dependency updates and vulnerability alerts inside GitHub.
Free inside GitHub for dependency alerts, security updates and version-update pull requests.
Automate static sites, services and preview environments in AWS.
Free self-service plan: 10 agent tasks/month for one user, running in your own cloud account.
Fast remote Docker builds and CI runners with persistent caching
7-day trial of the $20/month Developer plan: 1 user, unlimited concurrency, 500 Docker build minutes, 2,000 Depot CI and GitHub Actions minutes, 25 GB cache.
Visual authentication flows backed by APIs and SDKs for custom experiences.
7,500 monthly active users, unlimited applications and core authentication flows.
Simple cloud infrastructure for developers with predictable pricing and excellent documentation.
$200 in free credits over 60 days, 10 GB of object storage and a free managed database on the Starter plan.
Database-first backend and headless CMS with instant REST, GraphQL and no-code Studio
Core costs $0 with 3 user seats, 25 collections and 5 flows. Self-hosting is free, while Directus Cloud is a $99/month add-on for Core and Team.
Persistent text, voice and video spaces for developer communities.
Core text, voice, video, communities and bots are free; upload quality and customization have limits.
Deploy applications to your own server with Heroku-compatible workflows, using only Docker.
Free and open source. Self-hosted on your own server. Unlimited apps and databases. No per-user or per-project fees.
Color exploration, palette generation and accessibility tools for digital design
Free access to color discovery, palettes, gradients, harmonies and conversion tools, plus a Premium area for additional features; pages do not show Premium prices or limits.
Centralize and sync application secrets across development and production
Developer free for 3 users: 10 projects, 4 environments, 10 configs per environment, 5 syncs, 50 service tokens. Extra users $8/month; Team 14-day trial, then $21/user/month.
Repeatable containerized builds with a Dockerfile-like CI syntax
Free local CLI with no account, card, or hosted quota; the 6,000 Satellite build-minute/month free tier ended when Earthly Cloud shut down on July 16, 2025.
Open-source graph-relational database with typed schemas, EdgeQL and managed cloud
Gel Cloud Free includes 1/4 compute unit, 1/2 GiB RAM, 1/16 vCPU and 1 GB disk. Pro starts at $19.50/month with 1/2 compute unit, 10 GiB storage and 100 GiB transfer.
A delightful hand-drawn canvas for diagrams and collaborative sketches.
The core whiteboard is free and open source with unlimited local drawings; paid Plus adds cloud collaboration.
Call and deploy thousands of generative AI models through fast serverless APIs
No free tier or trial for Model APIs; fal uses prepaid credits. New accounts start at 2 concurrent requests and scale to 40 as paid invoices accumulate.
Simple, privacy-first web analytics with reliable reporting
7-day free trial with unlimited pageviews and all features, requires a credit card; paid plans start at $15/month and include at least 50 sites.
Serverless transactional document database delivered as a web-native API
The Free plan includes 5 databases, 100,000 transactional reads, 50,000 transactional writes, 500,000 compute operations and 100 MB of storage per month, enforced limits.
Collaborative interface design, prototyping and developer handoff.
Starter: unlimited drafts, UI kits and collaborators, with 3 collaborative design files and 3 FigJam files.
File uploads, transformations and delivery through one developer API
Free plan with 1 GB bandwidth, 500 uploads, 1,000 transformations, 1 GB Filestack Storage and 1 team member. Free forever, 500 MB max file size, no credit card required.
Serve open models with fast OpenAI-compatible inference and fine-tuning
New accounts get $1 in free credits. Without a payment method or active credits, the limit is 10 requests per minute; with credits, 6,000 per minute.
Run full-stack apps close to users with global edge compute and instant anycast TLS.
7-day or 2-hour runtime trial: up to 10 machines with 4 GB RAM each and 20 GB volume storage. Trial machines auto-stop after 5 minutes. Credit card required after trial.
A growing collection of professional fonts free for personal and commercial use.
All fonts are free for personal and commercial use under Fontshare's license; no account is required.
Connect any form to email without managing a backend
Free plan: 250 submissions, 10 forms, spam filtering, Slack and Zapier, no credit card required. One-time upgrade: $25 (was $50) for 50,000 submissions and 100 forms.
Add a reliable form backend to any site without writing server code.
50 form submissions/month, unlimited forms and projects, spam filtering and email notifications.
Visual website design, CMS and publishing in one collaborative canvas
Free: 500 AI credits to try, 10 CMS collections, 1,000 pages, 1 GB bandwidth and up to 3 editors without a subscription. Basic starts at $10/month, Pro at $30/month.
A free, ad-supported coding agent available in the terminal, browser and cloud workspaces.
Free CLI, web app builder, cloud workspace and AI chat with no subscription, API key or credit card; supported by text ads.
Open-source publishing platform for blogs, newsletters, memberships and paid subscriptions
Ghost(Pro) starts with a 14-day free trial. Starter is $18/month billed yearly, 1 staff user, 1,000 members, 1 newsletter and 5 MB per-file uploads; self-hosted Ghost is free.
Detect exposed secrets in source code and guide their remediation.
Secret scanning for individual developers, up to 25 developers and 100 incidents/month.
Repositories, Pages, CI/CD and project management in one platform for developers.
Unlimited public and private repositories; Pages and 2,000 Actions minutes/month for private repos.
Automate builds, tests, releases and workflows next to your code.
Free for public repositories; private repositories include 2,000 minutes and 500 MB artifact storage/month.
Integrated pipelines, runners and environments for GitLab projects.
400 compute minutes/month on GitLab-hosted runners; self-managed runners do not consume that quota.
Prototype with Gemini models in a browser playground and generate API keys for development.
AI Studio is free to use; selected Gemini API models include a free tier with model-specific rate limits.
Widely supported web and app traffic analytics from Google.
Standard Google Analytics is free for most sites and apps; enterprise-scale Analytics 360 is paid.
Hosted dashboards, metrics, logs, traces and application observability.
10k metric series, 50 GB logs, 50 GB traces and 14-day retention for 3 users.
Build with fast hosted inference for open models through an OpenAI-compatible API.
Free API plan with model-specific request and token limits; exact quotas are published in the Groq console docs.
Check accounts and domains against known data breaches through an API.
Pwned Passwords and basic breach lookups are free; authenticated account and domain API access is paid.
Monitor cron jobs and background tasks with simple heartbeat URLs.
Hosted free plan: 20 checks for one team member with email, webhook and chat integrations.
AI-powered project management for tasks, projects and team workflows
The official Height domain is currently unreachable, so no active free tier, trial duration, usage limits, price or card requirement can be verified.
European cloud VPS with exceptional price-performance and a strong developer community.
Starting at 4.15 USD/month for 2 vCPU, 4 GB RAM, 40 GB SSD and 20 TB outbound transfer.
Full-stack observability with session replay, errors, logs and traces
Free forever: 500 monthly sessions, AI error grouping and up to 15 seats.
Open source REST, GraphQL and WebSocket client in the browser, a lightweight Postman alternative.
Free and open source. The cloud version includes 10,000 requests per month.
Discover models and datasets, run demos and publish ML applications.
Free account for public models, datasets and Spaces; includes limited shared CPU and monthly inference credits.
GraphQL-native content platform for structured, multi-source content.
Hobby: 3 seats, 2 locales, 100k API calls/month, 1 GB assets and 100 GB asset traffic.
Real-time image and video optimization, transformation and delivery.
20 GB bandwidth and 3 GB media storage/month, with transformations and video processing.
Open-source secrets, certificates and privileged access for developers
Free plan at $0, no credit card: 5 identities, unlimited projects, 3 envs/project, 10 secret syncs, 100+ integrations. Pro from $20/identity/month (annual) or $23 monthly.
Durable execution for event-driven workflows, background jobs and AI agents
Hobby at $0/mo: 50k executions/month, 5 concurrent, 500 MB span data, 10K scores, 500K events, 100K queue depth, 50 realtime connections. Pro from $99/mo. No card required.
An agent-native backend with database, auth, storage, functions and model access.
Free developer plan with a Postgres database, auth, storage, functions and limited model credits for prototypes.
Monitor services, coordinate incidents and publish polished status pages
Starter free forever: 15 monitors with 2-minute checks, email alerts, 5 team members, 2 on-call members, a public status page and 200 subscribers. No credit card required.
IP geolocation and data API with global coverage, ASN, connection type and more.
50,000 requests per month, no credit card required.
Project management, issue tracking and agile planning for teams
Free up to 10 users, unlimited projects, tasks and forms, 100 automation runs per month and 2 GB storage. Standard trial lasts 14 days; payment only needed after it.
Free public REST API with sample data for prototyping and learning with zero setup.
Completely free, no sign-up. POST/PUT/DELETE calls are simulated and do not persist.
An asynchronous coding agent that works on real tasks in GitHub repositories and prepares changes for review.
15 coding tasks/day, up to 3 concurrent tasks, powered by Gemini 2.5 Pro.
Deploy web applications to any VPS with zero infrastructure complexity using Docker.
Free and open source. No platform fees. Deploy to any server you control with only Docker as a dependency.
Git-based CMS that makes Markdown, YAML and JSON content editable from a web UI
Keystatic Cloud Free allows unlimited teams and projects, up to 3 users per team. Pro starts at $10/month plus $5/user/month; local and GitHub modes self-host free.
Call and monitor many language models through one consistent interface.
Free developer plan with limited monthly logs and evaluations; model-provider inference costs remain separate.
Straightforward authentication, organizations and feature access for SaaS apps.
10,500 monthly active users, 5 organizations and core authentication with no credit card.
Premium managed WordPress and application hosting with Google Cloud infrastructure and 24/7 support.
Starting at $35/month for one WordPress install, 10 GB disk, 25,000 monthly visits and 24/7 support. Application hosting starts at $3.50/project/month for static sites.
Deploy global serverless containers with autoscaling and AI-ready compute
Free tier: 1 web service per org, 512 MB RAM, 0.1 vCPU, 2 GB SSD, 100 GB outbound/mo, Frankfurt or Washington, D.C. PostgreSQL: 1 GB, 5 active hours. Credit card required.
Open-source tracing, prompt management and evaluation for LLM products.
Hobby: 50k usage units/month with 30-day retention; self-hosting the open-source edition is also free.
Fast issue tracking, cycles and product roadmaps for software teams.
Unlimited members, 2 teams and 250 issues, with Slack/GitHub integrations and API access.
Reliable and affordable cloud VPS with data centers across the globe and 24/7 support.
$100 in free credits for new accounts, starting at $5/month for 1 vCPU, 1 GB RAM, 25 GB SSD and 1 TB transfer.
Centralize structured logs and query them quickly with SQL-like syntax.
Better Stack free logs: 1 GB/month with 3-day retention, live tail, SQL queries and alerts.
Authentication and authorization infrastructure for consumer and business apps.
Free cloud plan: 50k monthly active users and core auth; the open-source edition can be self-hosted free.
Async video messaging for explaining work, sharing updates and reducing meetings
Starter is $0 for up to 50 members, 25 videos per person and 5-minute recordings. Business is $18 per user per month; Business + AI is $24 with a 14-day trial.
Send product, marketing, and transactional email from one platform
Free plan: 1,000 subscribed contacts, 4,000 sends/month, 10 emails/sec, all features, no credit card required. Paid plans are based on subscribed contacts.
Discover, create and ship lightweight motion graphics for digital products
Free: up to 5 private file uploads, unlimited public uploads via After Effects and Figma plugins, 10 public downloads per month and unlimited Lottie Creator files.
Send transactional and marketing email with APIs, SMTP and templates.
6,000 emails/month with a 200/day limit, unlimited contacts, APIs, SMTP and one user.
Test email safely in sandboxes and send transactional messages in production.
Email API Free: 4,000 emails/month with a 150/day limit, one domain and 3-day log retention.
Visual workflow automation for connecting apps, APIs and business processes
Free plan: 1,000 credits/month, 2 active scenarios, 15-min minimum interval, 5-min execution limit, 5 MB files. No credit card. Paid Core from $9/month for 10,000 credits.
A collaborative whiteboard for workshops, diagrams and remote planning.
Unlimited team members, 3 editable boards, templates and core integrations.
Access Mistral's language, code, embedding and multimodal models through its developer API.
Free API mode for experimentation with lower usage limits; current quotas are shown in the account usage page.
Understand product usage through events, funnels, cohorts and retention.
Up to 1M monthly events with unlimited reports, core product analytics and limited session replay.
Create fake REST endpoints in seconds to prototype and test frontends without a real backend.
1 project with up to 4 resources and unlimited requests.
Run Python workloads and AI infrastructure on serverless GPUs without paying for idle time
$0 Starter plan with $30 per month in free credits, 3 seats, 100 containers and 10 GPU concurrency. A payment method is required, and extra usage bills by time.
Document database as a service, with vector search, Atlas Search and global deployment.
Free M0 cluster with 512 MB storage, no time limit.
Scan a website for security headers and common web hardening practices.
Completely free public web-security scanner with unlimited on-demand scans and no account required.
Video infrastructure for uploading, streaming and measuring playback
Free plan with 100,000 delivery minutes per month, up to 10 stored videos and on-demand video only. No credit card is required to start.
Open-source workflow automation platform to connect apps and build automations visually.
Free self-hosted community edition with unlimited workflows. Cloud free tier with 5 active workflows.
Serverless Postgres with autoscaling, database branching and pay-per-use pricing.
0.5 GB storage, 1 project and compute that scales to zero when idle.
An all-in-one platform for deploying modern web projects and serverless functions.
300 monthly usage credits, one concurrent build, custom domains, SSL and deploy previews.
Full-stack application performance and infrastructure monitoring.
100 GB data ingest/month, one full-platform user and unlimited basic users.
Build, deploy, and scale services, jobs, databases, and AI workloads across any cloud
Developer Sandbox at $0: 2 services, 2 jobs, 1 addon, up to 1 BYOC cluster. Payment method required to create resources. BYOC workloads also incur cloud provider charges.
Research and reason across documents, websites, audio and other sources with grounded Gemini answers.
100 notebooks with up to 50 sources each, plus 50 chat queries and 3 audio generations/day.
Connected docs, wikis, databases and lightweight project management.
Free for individuals with unlimited pages; teams get a limited collaborative block trial and 5 MB uploads.
Prototype with hosted APIs for a rotating catalog of leading AI models and NVIDIA NIM microservices.
Free hosted NIM API endpoints for prototyping through the NVIDIA Developer Program; available models and limits can change.
Open source and free weather API with global models, historical data and hourly forecasts.
Free for non-commercial use, no sign-up and no declared request limit.
API to extract Open Graph metadata from any URL, useful for link previews in apps.
100 requests per month on the free plan.
One API for many language models, including a rotating selection of free models.
Free models allow up to 50 requests/day, or 1,000/day after purchasing at least $10 in credits.
Open-source uptime monitoring and status pages managed as code
Hobby free plan: one monitor, one status page with three components and a minimum 10-minute check interval. No credit card required.
API-first identity and access management for apps, enterprises and AI agents
Developer: free with 2 development environments, 1 member, no production or staging, unlimited social connections, passkeys, MFA and 24 hours of historical analytics
European cloud leader offering VPS, dedicated servers, managed Kubernetes and AI infrastructure.
Starting at 3.50 EUR/month for VPS with 1 vCPU, 2 GB RAM, 20 GB SSD and unmetered bandwidth at 250 Mbps.
Open-source, code-first CMS and full-stack Next.js framework you can own and deploy anywhere
Free self-hosted software forever. The official site currently lists enterprise hosting and support, but no public hosted free-tier quota or trial.
Open-source interface design and prototyping with real-time collaboration and developer handoff.
Professional: $0 with up to 8 team members, unlimited viewers and files, 10 GB storage and 7-day version history.
Connect APIs and run event-driven workflows with code when you need it.
100 workflow credits/month, 3 active workflows and unlimited testing in the builder.
Privacy-friendly, open-source web analytics hosted in Germany
30-day free trial, no credit card; Standard starts at $6/month for 10,000 pageviews, 50 websites, unlimited members and retention. Self-hosted core is free under AGPLv3.
Open-source project management with work items, cycles, wiki and self-hosting
Cloud Free is $0 for up to 12 seats with 500 AI credits monthly. New workspaces get a 14-day Business trial without a card. Pro is $6 per seat per month and Business $13.
Managed MySQL-compatible Vitess and Postgres databases with branching and horizontal scaling
No free plan. Base includes 10 GB storage, 1 production branch, 1,440 dev-branch hours, 7-day Query Insights retention, 12-hour backups; single-node Postgres at $5/month.
Simple, privacy-friendly web analytics with an open-source core
30-day free trial with all Business features and limits, no credit card; paid plans start at $9/month for 10,000 monthly pageviews.
Generate AI images through a free API without sign-up or API keys.
Free image and text generation API with no sign-up or API key; public usage is rate-limited under fair use.
Manage Kubernetes deployments in your own AWS, GCP, or Azure account
Startup deal: 6 months of waived platform fees. Standard: $6 per GB RAM/month and $13 per vCPU/month, unlimited apps/previews. AWS, GCP, or Azure infra costs are separate.
An AI gateway and control plane with logging, routing and guardrails.
Free developer plan: AI gateway, caching, fallbacks and a limited monthly log allowance; inference is separate.
Product analytics, session replay, feature flags and experiments together.
Free monthly: 1M analytics events, 5k session recordings, 1M feature-flag requests and 100k exceptions.
Page-building CMS with reusable slices and visual previews for editors.
Up to 4 users, unlimited documents and locales, 100 GB CDN and 4M API calls/month.
B2B authentication with organizations, enterprise SSO and ready-made UIs
Free: 10,000 monthly active users, unlimited organizations and waitlist users, custom domain, 2FA, RBAC, customizable UIs and up to 10,000 transactional emails
Deploy full-stack apps from GitHub in seconds with automatic HTTPS and custom domains.
One-time $5 free trial credit, no credit card required. Hobby plan at $5/month with included usage. Pro at $20/seat/month for teams.
Run web services, static sites and scheduled jobs from a single dashboard.
750 instance hours/month for web services; static sites are free. Free services spin down after 15 minutes without traffic.
Run thousands of community and official AI models through a simple API
Some models run free before billing; prediction endpoints allow 600 requests per minute and other endpoints 3,000. No fixed free-run quota; billing required once it ends.
A modern transactional email API with excellent React and developer tooling.
3,000 emails/month and 100/day, one domain, one webhook endpoint and one-day log retention.
A customizable content workspace backed by a real-time content platform.
20 user seats, 2 datasets, 10k documents, 100k API requests and 100 GB CDN bandwidth/month.
European cloud platform with VPS, serverless and managed databases from French data centers.
Free tier includes one serverless container with 1 GB RAM, a managed PostgreSQL database with 2 GB storage and 100 GB of object storage.
Fast hosted CI/CD pipelines with self-hosted open-source deployment
Cloud: $15/month credits, 2,000 Ubuntu x64 2-vCPU minutes, 20 concurrent jobs, 100 GB artifacts, 20 GB egress. Community Edition: $0 self-hosted, unlimited users.
Track errors, performance traces and user sessions across your stack.
Developer: 5k errors, 5M spans, 50 replays and 5 GB logs/month for one user.
Create polished image and video mockups for product launches and social content
Free: the site promotes free mockups and access to the mockup workflow. Terms list Basic and Pro billed monthly or annually, but public limits are not exposed.
Team messaging with channels, huddles and a large integration ecosystem.
90 days of message history, 10 app integrations and one-to-one huddles for small teams.
Find and fix vulnerabilities across code, dependencies, containers and IaC
Free plan at $0, no credit card: 5 projects, monthly limits of 200 Open Source, 100 Code, 300 IaC and 100 Container tests. Team from $25/month per developer.
Protect JavaScript supply chains by analyzing dependency behavior.
Free for open-source projects; personal GitHub protection and dependency analysis are available at no cost.
Cloud static analysis for code quality, maintainability and security.
Free for public repositories with unlimited lines of code; private projects require a paid plan.
Browser-based 3D design and interactive experiences with real-time collaboration
Free: limited files, unlimited viewers, watermarked exports and templates. Starter and Professional plans add unlimited files and more export and AI features.
Open-source user infrastructure for authentication, teams and more
Free: up to 10,000 auth users, 1 dashboard admin, 1,000 emails per month, email login, OAuth and magic links
Turn text prompts, images and wireframes into UI designs, frontend code and editable Figma work.
Free Google Labs access for generating UI from text or images, iterating in chat and exporting to Figma or frontend code.
Headless CMS with a visual editor and component-based content model.
One space, one user, 100k API requests/month and visual editing for small projects.
APIs and SDKs for authentication, B2B identity and fraud prevention.
Up to 10k monthly active users for consumer auth or 1,000 for B2B auth, with usage caps by method.
Postgres backend with database, auth, storage, realtime and edge functions.
2 projects, 500 MB database, 1 GB storage, 5 GB egress and 50,000 monthly active users.
Open-source authentication with managed cloud or unlimited self-hosting
Cloud: free under 5,000 monthly active users; self-hosted open-source is free at any scale; above that, $0.02 per MAU, with paid add-ons like MFA and account linking
Create flexible forms and surveys with a generous free plan.
Unlimited forms and submissions with most input types, payments, logic and integrations included.
Durable execution platform for reliable workflows and long-running applications
Self-hosted free with no Temporal license fee. Cloud: $1,000 in credits for 90 days. Essentials from $100/month with 1M Actions, 1 GB active and 40 GB retained storage.
Managed ClickHouse analytics infrastructure for real-time data products
Free with no time limit: 0.25 vCPU, 1 thread per request, 1,000 requests/day per organization, 10GB storage, $25 LLM credits and community support; no credit card.
A fast collaborative infinite canvas plus a React SDK for building custom canvas experiences.
The multiplayer web whiteboard is free; the SDK is free in development and offers a 100-day production trial or hobby license.
Run and fine-tune open models through a fast OpenAI-compatible AI platform
No free tier or trial; a minimum $5 prepaid credit purchase is required. Serverless inference uses dynamic per-model rate limits, and access pauses at a zero credit balance.
File uploading and media processing through configurable workflows
Community: 5 GB processing per month, 200 priority slots per region, 2 collaborators and a 0.5 GB file limit. Images watermarked, audio/video trimmed, stops at 5 GB.
Visual Kanban boards for organizing projects and team workflows.
Up to 10 boards per workspace, unlimited cards, 10 collaborators and 250 automation runs/month.
Durable background jobs and AI workflows in TypeScript
$0/month Free plan with $5 monthly usage credits, unlimited tasks, 5 members, 10 schedules, 1-day log retention and query lookback, 10 concurrent Realtime connections.
Keep CI reliable with flaky test quarantine and parallel merge queues
Free at $0/committer/month, up to 5 committers, 1M test spans per committer capped at 5M/month; includes flaky-test quarantine and PR comments. No credit card required.
Globally distributed edge SQLite database, built on libSQL.
500 databases, 9 GB total storage and 1 billion monthly reads.
Clean, privacy-minded website analytics with straightforward reports.
Free cloud plan: up to 3 websites, 100k events/month and 6-month retention; self-hosting is unlimited.
File uploads, image processing and adaptive delivery for web apps.
Free for personal use: 1,000 operations/month, files up to 500 MB, upload widget and API, basic image transformations, adaptive streaming, CDN, signed uploads and webhooks.
Serverless Redis and Kafka with per-request pricing, designed for edge and serverless environments.
10,000 daily commands on Redis and 10,000 daily messages on Kafka.
Website, API and real-user monitoring with alerts and incident workflows.
No permanent free tier: the platform currently offers a time-limited free trial of its paid monitoring plans.
Simple uptime monitoring with alerting and public status pages.
50 monitors with 5-minute checks, 3-month log retention and one basic status page.
Deploy web applications with a global CDN, SSL and preview URLs on every push.
Hobby: 1M edge requests, 1M function invocations and 100 deployments/day for non-commercial personal projects.
High-performance cloud VPS starting at $2.50/month with 20 global data centers.
$100 in free credits for new accounts, starting at $2.50/month for 1 vCPU, 512 MB RAM, 10 GB SSD and 500 GB transfer.
Receive static-site form submissions directly in your inbox through an API.
250 form submissions/month, unlimited forms and websites, with no backend or account required.
Open-source CMS powering a large portion of the web, with plugins, themes and a built-in block editor.
Completely free self-hosted software. Host it anywhere with PHP and MySQL.
User management plus enterprise features such as SSO, SCIM and audit logs.
AuthKit is free up to 1M monthly active users; enterprise SSO and Directory Sync are free while onboarding.
Open-source Postgres branching with copy-on-write storage and scale-to-zero
Self-hosted Open Source is free forever. Xata Cloud has a 14-day trial, then $0.012/hour plus $0.28/GB/month storage. Micro: up to 2 vCPUs, 1 GiB RAM, scale-to-zero.
Connect your apps and automate repetitive work with a visual builder
Free plan: 100 tasks/month, unlimited Zaps, two-step Zaps and 15-minute polling. Professional: $19.99/month billed annually for 750 tasks, or $29.99/month billed monthly.
Deploy containers and full-stack apps with an AI-assisted PaaS workflow
Free Plan $0/month: 1 manageable own server, 2C4G CI builds, 48-hour logs, 50 MB uploads. Auto-sleep when idle; no SLA or DB backup/log forwarding. No credit card required.
Try another search or explore all categories.
ABOUT US
A curated catalog of developer services with honest notes on pricing, limits and what to know before you sign up. No sponsored placements.
FAQ
Every service is reviewed before being listed. We check pricing, free tier limits, card requirements and real-world usability. No tool pays to appear here.
It means you can sign up and use the service without a credit card. You can filter for this using the sidebar.
Yes. Use the contact page or open an issue on GitHub. We review every suggestion.