Rocket.Chat vs Lark

Rocket.Chat is an open-source communication platform that enables secure team collaboration through chat, voice, and video. It’s designed for organizations that require full data control, customization, and integration flexibility.

Rocket.Chat allows self-hosting, giving businesses complete ownership of their communication data. The platform supports group and private messaging, file sharing, and advanced security features like end-to-end encryption and single sign-on (SSO).

It also integrates with tools like Jira, GitHub, and Trello to streamline workflows.

Lark is an all-in-one productivity suite that integrates chat, video conferencing, cloud storage, email, calendar, and collaborative documents. Developed by ByteDance, it aims to unify communication and workflow within a single platform.

Lark’s modern interface enables seamless collaboration across teams, allowing users to switch between chats, meetings, and document editing without leaving the workspace.

Its Docs and Sheets features allow multiple users to edit in real time, while built-in task tracking keeps projects organized. The platform’s smart calendar syncs meetings, reminders, and messages automatically, improving coordination.

Lark also includes unlimited message history, integrated translation, and secure cloud storage, making it suitable for global teams.