Mattermost vs Lark

Mattermost is an open-source collaboration platform designed for enterprises seeking secure, flexible, and self-hosted communication solutions. It offers team messaging, video conferencing, and workflow automation in one environment.

Built for developers and IT teams, Mattermost supports integrations with GitLab, Jenkins, Jira, and other DevOps tools to streamline development workflows.

The platform emphasizes data privacy, allowing organizations to deploy on-premises or in private cloud environments. Its interface supports channels, threads, file sharing, and real-time collaboration while ensuring compliance with security standards like ISO and SOC.

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.