Apps similar to Somnote include Zim, which is free and open source. Other options are CherryTree, Trilium Notes, TagSpaces and Cryptee. There's no shortage of Note-taking Tools like Somnote, with more than 100 alternatives for Windows, Mac, Linux, the web and Android.
Notebook is a personal notebook application. Its for storing notes, to-do lists, daily logs, things you want to remember, neat ideas you might do something with some day, cute things your children said, bad jokes--all the kinds of things you would write down now if only you had...
nvPY is a note-taking tool inspired by Notational Velocity, nvALT and ResophNotes. It syncs with simplenote, and runs on Linux, Windows and OSX.
South Africa
Jarnal is an open-source application for notetaking, sketching, keeping a journal, making a presentation, annotating a document - including pdf - or collaborating using a stylus, mouse or keyboard. It is similar to Microsoft .
MixNote is a mobile note taking app, like a memo pad or notepad. Take note of every deserved thing, with text, ToDo, voice and picture.
China
SCAN (Smart Content Aggregation and Navigation) is a personal semantic content manager for desktop users. It combines search, text analysis, tagging and metadata functions to provide new user experience of desktop navigation and personal document management.
Remember The Task is a light-weight ToDo application that allows you to maintain a list of tasks to be done. It Syncs with Remember The Milk so you can manage your tasks on the go using RTM.
Wieldy is a free to-do list manager that is based on the principles of GTD (Getting Things Done). It allows you to manage your to-dos in a simple but effective way. To-dos can be created as thoughts and actions, which can then be assigned to the Next Action, Today, or Someday...
Yojimbo makes keeping all the small (or even large) bits of information that pour in every day organized and accessible.
United States
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.
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.
United Kingdom
Productivity app. Save information like a sticky notes. You can create notes with images, videos or whatever you want. Save pages to read later or capture any web content with the chrome or firefox extension. Share boards with your friends. Create public boards.
Note yourself is an easy to use message-themed notes app which allows you to save and view notes as if they were chat messages.
