OpenNote was built to be an open web-based alternative to Microsoft OneNote (T) and EverNote.
License: Open Source
Apps available for Self-Hosted
Elephant is a notetaker with a classic interface. Developed by jusu
Apps available for Mac OS X Windows Linux
Elephant is ideal for users looking for a simple, multimedia note-taking app with offline access, while OpenNote excels in collaboration and customizable features but has a steeper learning curve.