Kinto : Kinto is a lightweight JSON storage service with synchronisation and sharing abilities.
CryptPad : CryptPad is the Zero Knowledge realtime collaborative editor.
Encryption carried out in your web browser protects the data from the server, the cloud ...
bosh : BOSH is an open source tool for release engineering, deployment, lifecycle management, and monitoring of distributed systems.
Plausible Analytics : Plausible is a lightweight and open-source website analytics tool. It doesn’t use cookies and is fully compliant with GDPR, CCPA and PECR.
Astuto : Astuto is a free, open source, self-hosted customer feedback tool. It helps you collect, manage and prioritize feedback from your users.
An open-source distributed storage service you can self-host to fullfill many needs.