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.
ntfy : Send push notifications to your phone or desktop using PUT/POST
Isso : Isso – Ich schrei sonst – is a lightweight commenting server written in Python and JavaScript. It aims to be a drop-in replacement for Disqus.
SimpleLogin : With email aliases , you can be anonymous online and protect your inbox against spams and phishing. Open-source.
A lightweight, open source, tracking-free comment engine alternative to Disqus.
