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.
Commento : A lightweight, open source, tracking-free comment engine alternative to Disqus.
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.
An open-source distributed storage service you can self-host to fullfill many needs.