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.
Gone - An ephemeral to-do list
Mini Diary - Simple and secure journal app
Todoist - Todoist is a to-do list that helps you get organized, at work and in life.
REFLECTLY - The world's first intelligent journal
Check - Check is a unit testing framework for C, which runs on environments such as GNU/Linux, GNU/Hurd, BSD, and Mac OSX.