Prometheus : Prometheus is an open-source systems monitoring and alerting toolkit originally built at SoundCloud. Prometheus's main features are:
a multi-dimensio...
Keycloak : Keycloak is an Open Source Identity and Access Management solution for modern Applications and Services.
Zulip : Powerful slack-like open source group chat
ntfy : Send push notifications to your phone or desktop using PUT/POST
Mattermost : Mattermost is a self-hosted solution for bringing all your team communication to one place, and making it searchable and accessible anywhere
A lightweight, open source, tracking-free comment engine alternative to Disqus.
