undo is a social note taking application, written in Rails 3.2 + Postgres, and deployable to Heroku.
The idea was it was a development environment for your notes, and only supported text based notes. That way you could take notes in your favorite editor, copy them in email, or have them synced and usable via tools like Dropbox.
Undo supports the following features:
- Create notes with automatic saving
- Automatically detect date related notes and remind you when they are coming up
- Try to create simple slide shows based on the format of your notes
- Tasks integrated into yournotes
- Autocomplete on hashtags (#) and other notes (/)
- Organize your notes into files and folders
- Sync your notes with dropbox
- Email notes to others (still there, but a bit buried)
- Publish notes
- Follow other peoples notes