CrocodileNote is described as 'Take simple text notes. You can put them into folders to create your own quick, easy and robust file structure'. There are more than 100 alternatives to CrocodileNote for a variety of platforms, including Windows, Mac, Online / Web-based, Android and iPhone. The best alternative is Joplin, which is both free and Open Source. Other great apps like CrocodileNote are Standard Notes (Freemium, Open Source), Google Keep (Free), Microsoft OneNote (Freemium) and Evernote (Freemium).
Writeaday is a novel journal app for the modern thinker. Integrates the power of streaks but in a visual color gradient form. There are hundreds of journaling apps out there - like, literally hundreds. We really think we have a novel concept for this old school genre.
PNotes (Pinned Notes or Portable Notes, use what you prefer) is written entirely in C and Windows API (with Pelles C for Windows IDE) - so it is fast and light-weight. It has flexible settings - both for the program in whole and for individual note.
NoteAway is the simplest, most convenient way to take quick notes on OS X. NoteAway has lots of powerful features for free, like iCloud syncing, rich text, attachments, simple import/export, and a variety of customizable options.