Kandra Labs, Inc.

Zulip’s own history page credits Tim Abbott — who maintained the newly open-sourced project on nights and weekends after Dropbox released it in 2015 — with founding Kandra Labs in April 2016 to steward and fund its development full-time. As of 2026, per the same page, a new nonprofit Zulip Foundation has become Zulip’s steward and now fully owns Kandra Labs.

websitegithub

Zulip

Free (Zulip Cloud: 10,000 messages of history, 5GB storage; self-hosted: every feature, unlimited history, no cost); paid Cloud and self-hosted tiers exist but list no public per-seat price on the official pricing page

Open-source, thread-based team chat — free to self-host with every feature included, or a managed Zulip Cloud plan with a real free tier.

Utilities Screen Open source Homebrew Verified August 29, 2026