CryptPad : CryptPad is the Zero Knowledge realtime collaborative editor.
Encryption carried out in your web browser protects the data from the server, the cloud ...
Kinto : Kinto is a lightweight JSON storage service with synchronisation and sharing abilities.
droppy : droppy is a self-hosted file storage server with a web interface and capabilites to edit files and view media directly in the browser. It is particula...
Astuto : Astuto is a free, open source, self-hosted customer feedback tool. It helps you collect, manage and prioritize feedback from your users.
cal.com : Open source meeting scheduling tool. Send a link, let others book a slot. Calendly alternative.
An open-source distributed storage service you can self-host to fullfill many needs.