Slack
Team messaging platform with channels, threads, and integrations for workplace communication.
Overview
Slack is the dominant team messaging platform, used by millions of teams worldwide. It organizes conversations into channels, supports threads, file sharing, and has thousands of integrations.
The free tier is generous for small teams but limits message history to 90 days. Paid plans start at $7.25/user/month, which adds up quickly for larger organizations.
Strengths
- Massive integration ecosystem with 2,400+ apps
- Excellent search across all messages and files
- Familiar interface that most people already know
- Strong API for custom bots and workflows
Weaknesses
- Expensive at scale — costs add up fast with large teams
- Can become noisy and distracting with many channels
- Free tier limits message history to 90 days
- Desktop app is resource-heavy
Pricing estimate
Free for small teams, 90-day history
Quick info
- Category
- Team Communication
- Starting price
- $7.25/user/mo
- Free tier
- Yes — Free for small teams, 90-day history
- Open source
- No
- Best for
- Any size
- Founded
- 2013
Last updated 2026-04-12
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Slack comparisons
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