Somnote is described as 'Record and save important information, brilliant ideas, and moments of everyday life easily and securely with SomNote' and is an app in the Office & Productivity category. There are more than 100 alternatives to Somnote for a variety of platforms, including Windows, Mac, Online / Web-based, Android and Linux. The best alternative is Joplin, which is both free and Open Source. Other great apps like Somnote are Standard Notes (Freemium, Open Source), Google Keep (Free), Microsoft OneNote (Freemium) and Evernote (Freemium).
Wheatt is an online bookmarking tool that allows you to to quickly save links, and then search them in every useful way imaginable, in any combination. For example, you can find a link that is tagged "programming", where the page contains the text "ruby".
Momento is a unique diary/journal writing app for iPhone & iPod touch, which provides a quick and easy way to record moments throughout your day. Connect with popular social web services, such as Twitter, Facebook, Flickr and Last.
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.
Drafts, where text starts. Quickly capture text and send it almost anywhere! Drafts lets you turn text into action – it’s a quick notebook, handy editor, and writing automation tool, all in one. Open it and write right away, and create.
Notebook PEAs - encryption of notes. Protects your private notes with a password. The text is never stored unencrypted on your disk (until you explicitly decide to do that). The used cryptographic primitives are currently considered as safe as possible.