Aiven
↗Managed data platform with Postgres, Kafka, Valkey, OpenSearch and more, across multiple clouds.
FreemiumNo card
Permanent free tiers for PostgreSQL, Kafka, MySQL, Valkey and OpenSearch, plus time-limited trial credits. No card required.
Data & backend
19 tools
Beeceptor
↗Intercept, mock and debug HTTP requests without writing a single line of backend code.
FreemiumNo card
50 requests per day per endpoint on the free plan.
CockroachDB
↗Distributed SQL database with high availability, ACID consistency and Postgres compatibility.
Trial onlyNo card
New Cloud organizations get a 30-day $400-credit trial. Legacy Basic clusters may retain 10 GiB and 50M free RUs/month.
Convex
↗Reactive TypeScript backend with database, functions, sync, search and file storage
FreemiumNo cardOSS
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.
Gel (formerly EdgeDB)
↗Open-source graph-relational database with typed schemas, EdgeQL and self-hosting
FreeNo cardOSS
Free open-source database for local use and self-hosting. Gel Cloud stopped accepting new instances in Dec 2025 and announced shutdown for Jan 2026.
Hoppscotch
↗Open source REST, GraphQL and WebSocket client in the browser, a lightweight Postman alternative.
FreemiumNo cardOSS
Free cloud plan at $0 forever with REST, GraphQL and realtime API testing, a personal workspace, collections and environments; paid plans add team and enterprise features.
InsForge
↗An agent-native backend with database, auth, storage, functions and model access.
FreemiumNo card
Free: $0, 50,000 MAU, 500 MB database, 1 GB storage, 100,000 edge calls, 600 build minutes and 120h custom compute; inactive projects pause after one week.
IPinfo
↗IP geolocation and data API with global coverage, ASN, connection type and more.
FreemiumNo card
IPinfo Lite includes unlimited country-level API requests and basic ASN data, free forever without a credit card.
JSONPlaceholder
↗Free public REST API with sample data for prototyping and learning with zero setup.
FreeNo cardOSS
Completely free, no sign-up. POST/PUT/DELETE calls are simulated and do not persist.
MockAPI
↗Create fake REST endpoints in seconds to prototype and test frontends without a real backend.
FreemiumNo card
Free plan with 1 project and up to 2 resources.
MongoDB Atlas
↗Document database as a service, with vector search, Atlas Search and global deployment.
FreemiumNo card
Free M0 cluster with 512 MB storage, no time limit.
Neon
↗Serverless Postgres with autoscaling, database branching and pay-per-use pricing.
FreemiumNo card
Free plan: 1 GB storage per project, up to 100 projects, with compute suspending after 5 minutes of inactivity.
Open-Meteo
↗Open source and free weather API with global models, historical data and hourly forecasts.
FreemiumNo cardOSS
Free for non-commercial use without sign-up, subject to 600 calls/min, 5,000/hour, 10,000/day and 300,000/month.
OpenGraph.io
↗API to extract Open Graph metadata from any URL, useful for link previews in apps.
FreemiumNo card
100 requests per month on the free plan.
PlanetScale
↗Managed MySQL-compatible Vitess and Postgres databases with branching and horizontal scaling
PaidCard
No free plan. Postgres single-node starts at $5/month; HA uses 1 primary and 2 replicas across 3 AZs. Vitess and Neki are priced by deployed resources.
Supabase
↗Postgres backend with database, auth, storage, realtime and edge functions.
FreemiumNo cardOSS
2 projects, 500 MB database, 1 GB storage, 5 GB egress and 50,000 monthly active users.
Turso
↗Globally distributed SQLite-compatible cloud databases using Turso or libSQL.
FreemiumNo cardOSS
Free plan: 100 databases, 5 GB storage and 500 million rows read per month.
Upstash
↗Serverless Redis with pay-as-you-go or fixed pricing, designed for edge and serverless environments.
FreemiumNo card
Redis Free includes 500,000 commands per month; Upstash Kafka was deprecated in 2024 and support was scheduled to end six months later.
Xata
↗Open-source Postgres branching with copy-on-write storage and scale-to-zero
FreemiumNo cardOSS
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.
ABOUT US
Curated tools, honestly reviewed.
Every tool in this category has been manually reviewed. Pricing, free tier limits and card requirements are checked before listing.
FAQ
Questions, answered.
Are these the best tools in this category?＋
They're the ones we'd actually use. We prioritize tools with a clear use case, a working free tier, and honest pricing, not the most popular or most marketed.
How do I filter by free tools only?＋
Use the pricing filter in the sidebar. Select Free or Freemium to narrow the list. Each card also shows whether a card is required.