What are some alternatives?
Evernote - Bring your life's work together in one digital workspace. Evernote is the place to collect inspirational ideas, write meaningful words, and move your important projects forward.
Simplenote - The simplest way to keep notes. Light, clean, and free. Simplenote is now available for iOS, Android, Mac, and the web.
Standard Notes - A safe place for your notes, thoughts, and life's work
Google Keep - Quickly capture what's on your mind and get a reminder later at the right place or time.
CherryTree - cherrytree – giuspen
Notezilla - Colorful & powerful sticky notes app for Windows & Phones.