Novu : The open-source notifications infrastructure. A fully-featured microservice to send SMS, E-mail, Slack and Push notifications. Embeddable notification...
Gallery : Open source web based photo album organizer. Gallery gives you an intuitive way to blend photo management seamlessly into your own website whether you...
Zulip : Powerful slack-like open source group chat
Mailtrain : Mailtrain is a self hosted newsletter application built on Node.js (v5+) and MySQL (v5.5+ or MariaDB). Mailtrain supports subscriber list management, ...
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...
Open source meeting scheduling tool. Send a link, let others book a slot. Calendly alternative.