Zulip
Focus: threads, open source and self-hosted. Shares team chat and slack alternative with Pumble. Rated 4.5 (Pumble: 4.4).
Web App
Team chat with a free plan for unlimited users and unlimited message history.
Rating
4.4 / 5
Pricing
Freemium
Difficulty
Beginner
Works on
Web, macOS, Windows
Built with love by Shushant Lakhyani. Building bestproductivityresources.com
Pumble is a Slack-style team chat app from CAKE.com with channels, direct messages, threads and calls. Its free plan covers an unlimited number of users with unlimited message history and 10 GB of storage per workspace. Paid plans start at $2.49 per seat a month billed annually. Apps are available for Mac, Windows, Linux, iOS and Android.
Small teams that outgrew Slack's 90-day history on the free plan.
Teams that depend on many Slack integrations.
Not sold on Pumble? These do a similar job, and each card says what it has in common.
Focus: threads, open source and self-hosted. Shares team chat and slack alternative with Pumble. Rated 4.5 (Pumble: 4.4).
Focus: self-hosted, open source and devops. Shares team chat and slack alternative with Pumble. Same 4.4 rating.
Focus: self-hosted, open source and omnichannel. Shares team chat and slack alternative with Pumble. Rated 4.2 (Pumble: 4.4).
Focus: video meetings. Shares team chat and channels with Pumble. Rated 4.3 (Pumble: 4.4).
Focus: chat and teams. Shares channels with Pumble. Rated 4.2 (Pumble: 4.4).
Focus: async communication and threads. Shares team chat and slack alternative with Pumble. Same 4.4 rating.
Want to spend nothing? These free picks cover similar ground.
Focus: ai agents, collaboration and multi-agent. Shares team chat and messaging with Pumble. A desktop app, not a web app. Free (Pumble: Freemium). Rated 4.5 (Pumble: 4.4).
Focus: project management, issue tracker and open source. Shares team chat with Pumble. Free (Pumble: Freemium). Same 4.4 rating.
Focus: chat, video meetings and microsoft. Shares slack alternative with Pumble. Free (Pumble: Freemium). Rated 4.0 (Pumble: 4.4).
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Focus: dashboards, monitoring and metrics. Also in Team Productivity and Collaboration, like Pumble. Free (Pumble: Freemium). Rated 4.7 (Pumble: 4.4).
Focus: wiki, documentation and self-hosted. Also in Team Productivity and Collaboration, like Pumble. Free (Pumble: Freemium). Rated 4.6 (Pumble: 4.4).
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