Slack

Team messaging with channels, huddles and a large integration ecosystem.

chatintegrations
Websiteslack.com
CategoryTeam & productivity
PricingFreemium
Card requiredNo
← ← Back to directoryGo to Slack ↗ ↗

ABOUT

What is Slack?

Slack is a team messaging platform organized into channels, direct messages and huddles with a deep app integration ecosystem. It serves as the central communication hub for many organizations, connecting to tools like GitHub, Jira, Notion and thousands of others through its API and marketplace. While originally positioned as email replacement, Slack is now a full collaboration layer for business communication.

BEFORE YOU SIGN UP

What you should know

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Extensive integration marketplaceSlack connects with thousands of apps out of the box. Custom integrations via webhooks, slash commands and the Events API are straightforward.
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Mature and reliable platformSlack has consistently high uptime, polished desktop and mobile apps and a well-documented API that is the standard for team chat integrations.
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90-day history limit on free tierFree workspaces can view and search only the last 90 days. Older content is hidden, and messages/files over one year old are permanently deleted on a rolling basis.
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Expensive per-user pricingPaid plans cost per user per month and the cost adds up quickly for large organizations, especially when many users are read-only.

COMMUNITY

From the forums

Slack is nearly universal in tech workplaces on Reddit and HN. Users praise the polish of the user experience, the reliability of notifications and the breadth of available integrations. The threaded conversations and huddle feature are well-regarded. Frequent frustrations include the high cost per user on paid plans, the 90-day message history limit on the free tier and notification overload from noisy channels.

— Community sentiment

💬Discuss on Reddit ↗

SEE ALSO · Team & productivity

Alternatives to Slack

ClickUp

Freemium

Tasks, docs, goals and project views in a highly configurable workspace.

Notion Calendar (formerly Cron)

Free

Professional calendar with time zones, scheduling links and Notion integration

Discord

Freemium

Persistent text, voice and video spaces for developer communities.

ABOUT US

Honest, independent, no fluff.

No paid placements. Just a clear look at what this does, what it costs, and what to know before you commit.

Read more→

FAQ

Questions, answered.

Can I use Slack for free permanently?＋

Yes. Free has no time limit, but only 90 days of history are visible, up to 10 apps can be installed and data older than one year is permanently deleted.

How does Slack compare to Discord for team communication?＋

Slack is designed for professional workspaces with threaded conversations, granular notification controls and deep enterprise integrations. Discord is better suited for community spaces and real-time social interaction.

Does Slack support end-to-end encryption?＋

Slack does not offer end-to-end encryption by default. Data is encrypted in transit and at rest. Enterprise Key Management is available on premium plans.