Zulip

San Francisco, CA, USA
2016
May 5, 2022   |  By Tim Abbott
Today, we’re delighted to announce the general availability of Zulip’s public access option. Open-source projects and other open communities can now offer one-click access (no login required!) to part or all of their Zulip chat. For those who are not familiar with it, Zulip is a modern team collaboration tool with unique topic-based threading that is ideal for both live and asynchronous conversations. It is also a vibrant open-source project, developed by a values-focused organization.
Mar 29, 2022   |  By Tim Abbott
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.
Feb 25, 2022   |  By Alex Vandiver
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.
Dec 17, 2021   |  By Tim Abbott
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.
Nov 12, 2021   |  By Tim Abbott
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.
Jul 26, 2021   |  By Tim Abbott
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.
May 13, 2021   |  By Tim Abbott
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.
Apr 28, 2021   |  By Alya Abbott
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.
Dec 1, 2020   |  By Alex Vandiver
We released Zulip Server 3.3 today! This is a bug fix release, containing a few cherry-picked changes since Zulip Server 3.2.
Oct 27, 2020   |  By Trent Lapinski
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.
May 13, 2018   |  By PyCon 2018
Python now offers static types! Companies like Dropbox and Facebook, and open-source projects like Zulip, use static types (with PEP 484 and mypy) to make Python more productive and fun to work with — in existing codebases from 40k lines to 4 million, in Python 2 and 3, and while preserving the conciseness and flexibility that make Python a great language in the first place. I’ll describe how.
Jan 27, 2018   |  By Aswin vb
Omega-bot is a zulip chat bot into which lot of features are integrated.
Aug 21, 2017   |  By SF Python
Rich Gupta presents specific, reusable techniques used to build an open source project and make the community successful.

The world’s most productive group chat. Zulip combines the immediacy of Slack with an email threading model. With Zulip, you can catch up on important conversations while ignoring irrelevant ones.

Zulip is 100% open source software, built by a vibrant community of hundreds of developers from all around the world. With 120,000 words of developer documentation, a high quality code base, and a welcoming community, it’s easy to extend or tweak Zulip.

Zulip is used by open source projects, Fortune 500 companies, large standards bodies, and others who need a real-time chat system that allows users to easily process hundreds or thousands of messages a day.