Twake is an open-source team collaboration and task management platform — combining chat, task boards, drive, calendar, and video calling in a single self-hostable workspace. Developed by Linagora and launched in 2020, Twake is particularly popular in France and among organizations that require data sovereignty, offering a European-built alternative to Slack and Microsoft Teams. Its task management integrates directly with conversations, making it easy to turn messages into tracked action items without leaving the communication context.

Reference:

Twake on Wikipedia

https://twake.app