Zulip combines the immediacy of real-time chat with an email threading model, making thousands of teams globally more productive than ever. 100% open source.Zulip is an organized team chat app for distributed teams of all sizes.

Core values

- It facilitates inclusive, global, and asynchronous communication, which is particularly beneficial for diverse and distributed communities, such as open-source projects, research collaborations, and volunteer organizations[1][2].
- It enhances knowledge management by creating an organized repository of conversations, making it easier for members to participate and access information[2].
- It supports communities that work on projects with significant social impact, such as healthcare standards and other social good initiatives[1].
- Zulip is committed to sustainability, maintains high standards for code quality, and provides free hosting for open-source projects, research groups, education, non-profits, and other communities, ensuring that worthy organizations can use the platform regardless of funding[4].