DokuWiki is a simple to use and highly versatile Open Source wiki software that doesn't require a database.
The Zero Knowledge, Self-Hosted Cloud. CryptPad is a private-by-design alternative to popular office tools and cloud services. All the content stored on CryptPad is encrypted before being sent, which means nobody can access your data unless you give them the keys (not even us).
Etherpad is a highly customizable open source online editor providing collaborative editing in really real-time.
Alternative implementation of the Bitwarden server API written in Rust and compatible with upstream Bitwarden clients*, perfect for self-hosted deployment where running the official resource-heavy service might not be ideal.