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Pumble vs Slack: catalog facts
Pumble	Slack
Freemium Free with unlimited users and message history; paid plans are sold for businesses.	Freemium Free plan available, with paid plans for more features.
Windows, macOS, Linux, Android, iOS	Windows, macOS, Linux, Android, iOS, Web
Unlimited users and message history on the free offering Channels, threads, calls and recording in one app	Channels keep team conversations organized Large range of app integrations
Hosted service only, with no self-hosting option Closed source	Closed source hosted service Many features and AI tools sit behind paid plans
Downloadable app, Hosted service	Downloadable app, Web application, Hosted service
Closed source	Closed source
License not stated	License not stated
Account needed	Account needed
Not stated if it works offline	Needs internet
Official website Full listing and sources Checked September 24, 2026	Official website Full listing and sources Checked September 23, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.