Slack Alternatives
Top Business apps that compete with Slack, ranked by what users complain about most.
Best Slack Alternatives in Business
3 apps from the App Store, ranked by negative review volume in our database.
How we pick Slack alternatives
Unstar.app tracks every business app on the App Store and ranks them by what users actually complain about — crashes, broken features, support issues, hidden costs. When you're looking for an alternative to Slack, the apps above are real competitors with real review histories you can dig into.
What to check before switching
- • Negative review count vs total ratings (higher ratio = more user friction)
- • Recurring complaint themes — crashes, billing, missing features
- • How recent the negative reviews are (old complaints may be fixed)
- • Whether the developer responds to negative reviews
Click any alternative above to see its full negative review breakdown, AI-generated issue summary, and word cloud of recurring complaints.
FAQ
What are the best alternatives to Slack?
Top alternatives include Microsoft Teams, Discord - Talk, Play, Hang Out, Zoom Workplace — ranked above by review patterns from the App Store.
Why compare Slack alternatives by negative reviews?
Marketing pages always sound great. 1-star reviews tell the truth — what crashes, what nickel-and-dimes you. We surface those signals.
Is there a free alternative to Slack?
Many Business apps offer free tiers — check each listing on the App Store. Unstar shows complaints across all price points.