Prometheus : Prometheus is an open-source systems monitoring and alerting toolkit originally built at SoundCloud. Prometheus's main features are:
a multi-dimensio...
cal.com : Open source meeting scheduling tool. Send a link, let others book a slot. Calendly alternative.
LGTM.in : Looks good to me (LGTM) is the most popular comment on Github, perhaps. But LGTM is boring. So we spice it up with some images.
Garage : An open-source distributed storage service you can self-host to fullfill many needs.
Cachet : Beautiful & simple service statuses. The open source status page system, for everyone.
A lightweight, open source, tracking-free comment engine alternative to Disqus.
