Day One - A simple journal application for the Mac, iPhone, and iPad. AboutTo learn more about Day One, see these two excellent reviews . PublishPublish is not available in Day One 2.
Journalistic - A simple, yet powerful micro journaling app
Joplin - Joplin is a free, open source note taking and to-do application, which can handle a large number of notes organised into notebooks. The notes are searchable, tagged and modified either from the applications directly or from your own text editor.
Havok - Colorado Thrash Metal - New Website Coming Soon
Reminisce Journal - Reminisce Journal is a free iOS and Android app that helps you to capture live moments, daily activities, thoughts, ideas and travel logs, etc.
Box2D - A 2D Physics Engine for Games