Project and task management

Pumble alternatives

2 open-source projects that already do this job. Free to use - not free to run, which is what the numbers on the right are for.

The full assessment →

The projects

zulip/zulip25,614Apache-2.0Full server and web application providing threaded team chat with channels, DMs, and search.Open on GitHub chattocorp/chatto2,490AGPL-3.0Self-hosted, fully featured team and group chat application for real-time messaging and file sharing.Open on GitHub

What you give up either way

Mobile and desktop native apps parity and polish
Enterprise features like SSO (SAML/OAuth) and per-seat data retention policies
SOC 2 certification and associated compliance assurances
24/7 support SLAs and dedicated success representatives
Built-in large-scale video conferencing reliability and recording infrastructure

An open-source project doing the core job proves a replacement is possible. It does not prove it matches Pumble, and it does not prove anyone has run it for a month. How we decide.