Zulip vs. Lark

Zulip is an organized team chat application for distributed teams. Zulip’s 100% open-source software is available as a cloud service or a self-hosted solution. With conversations organized by topic, Zulip is ideal for both live and asynchronous communication Zulip serves startups, and small and mid-sized businesses, as well as communities with up to tens of thousands of members. It’s used by thousands of organizations around the world.

Built by ByteDance, Lark is an enterprise AI workspace designed for seamless human-agent collaboration. It unifies teams, communication, knowledge, and business workflows in one connected environment with an open architecture for AI models and agents. By bringing work into one place rather than scattering it across separate apps, Lark gives AI complete, real-time context and the native ability to act across the entire business. Today, organizations in more than 190 markets use Lark to turn AI into measurable business value.