Prometheus : Prometheus is an open-source systems monitoring and alerting toolkit originally built at SoundCloud. Prometheus's main features are:
a multi-dimensio...
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.
Beehive : Beehive is an event and agent system, which allows you to create your own agents that perform automated tasks triggered by events and filters. It is m...
Lemmy : Lemmy is a selfhosted social link aggregation and discussion platform. It is completely free and open, and not controlled by any company. This means t...
A lightweight, open source, tracking-free comment engine alternative to Disqus.