Mattermost : Mattermost is a self-hosted solution for bringing all your team communication to one place, and making it searchable and accessible anywhere
cal.com : Open source meeting scheduling tool. Send a link, let others book a slot. Calendly alternative.
Prometheus : Prometheus is an open-source systems monitoring and alerting toolkit originally built at SoundCloud. Prometheus's main features are:
a multi-dimensio...
Documize is an open source modern, lightweight and comprehensive alternative to Confluence.
It's built with Golang + EmberJS and compiled down to a single executable binary for Linux, Windows and macOS.