Prometheus : Prometheus is an open-source systems monitoring and alerting toolkit originally built at SoundCloud. Prometheus's main features are:
a multi-dimensio...
Kinto : Kinto is a lightweight JSON storage service with synchronisation and sharing abilities.
Mailtrain : Mailtrain is a self hosted newsletter application built on Node.js (v5+) and MySQL (v5.5+ or MariaDB). Mailtrain supports subscriber list management, ...
Tiny Tiny RSS : Tiny Tiny RSS is a free and open source web-based news feed (RSS/Atom) reader and aggregator.
OpenPhoto : A free, hosted, portable and open source photo sharing service. A photo application that lets you store your photos on Dropbox, Amazon S3 or in your g...
Open source meeting scheduling tool. Send a link, let others book a slot. Calendly alternative.