We’re excited to announce the release of Zulip Server 5.0, containing hundreds of new features and bug fixes! Zulip is an open-source team collaboration tool with unique topic-based threading that is ideal for both live and asynchronous conversations. Fortune 500 companies, leading open-source projects, and thousands of other organizations use Zulip every day. Zulip’s 100% open-source software is available as a managed cloud service or a self-hosted solution.

An internal investigation recently uncovered a vulnerability (identified as CVE-2022-21706) in Zulip’s invitation links. Specifically, a reusable invitation link could be used to join a different organization than the one it was created for. As a result, there was a potential for users to join any organization without an invitation (and bypassing domain restrictions). This vulnerability was discovered by the Zulip security team, and has now been fixed for all Zulip Cloud organizations.

Quill, a team chat company with $16 million in venture capital funding, was acquired by Twitter and shut down their product last week. Users were given a mere four days to export their data prior to deletion; direct messages and private channels could not be exported at all. Our sympathies go out to Quill users, whose needs were given so little consideration in this deal.

This week, Discord teased plans to integrate a crypto asset wallet. After backlash from their user community, Discord clarified that the feature isn’t ready to ship “for now”. With many popular social and chat apps already on the blockchain bandwagon (including Facebook, Telegram, Signal, Twitter and Reddit), some are wondering whether Zulip might be next. The answer is no.

Zulip for Education is a new open source team chat product used at university departments around the world, including MIT, University of California San Diego and Technical University of Munich, Germany.

We’re excited to announce the release of Zulip Server 4.0, containing hundreds of new features and bug fixes! Zulip is an open-source team collaboration tool with unique topic-based threading that combines the best of email and chat to make remote work productive and delightful. Fortune 500 companies, leading open source projects, and thousands of other organizations use Zulip every day.

At Zulip, we’re out to build the world’s best collaboration platform, and we’re committed to keeping it 100% open source. If you’ve been using Zulip, love the product and its innovative threading model, and want to help share it with the world, please consider supporting us.

We released Zulip Server 3.3 today! This is a bug fix release, containing a few cherry-picked changes since Zulip Server 3.2.

As an open source project, Zulip is committed to making it convenient for every organization to use Zulip. For those who cannot maintain their own server, we offer the convenient Zulip Cloud SaaS service. For organizations concerned about privacy, data control, and compliance, we do everything we can to make self-hosting Zulip convenient and painless.