LifeQuest is a tool that keeps track of what you need to do, and tells you what to do next. You simply enter the things you want to do, along with priority and date information, and LifeQuest does the rest. Unlike other to do list programs, it aims to minimise the amount of effort you spend entering information. It is also inspired by GTD, with contexts and projects to help you find things to do wherever you are or when there is a project you want to focus on. It is also designed to be motivational. Your to do list is a Quest, your projects are Adventures, and your contexts are Locations.
Booktype makes it easier for people and organizations to collate, organize, edit, and publish books. Delivering frictionlessly to print, lulu.com, and almost any ereader, Booktype facilitates collaborative production processes, with no more lost manuscripts, overwritten Word files, awkward wikis, or cumbersome CMSes.
Qtnp is program for math\physics teachers and students. There 4 tools: Pen, Line, Jogged line, and Circle. The software can draw grids, coordinate planes, and graphics. It has flexible settings, presentation mode, support for all base formats, a GUI for blackboards/tablets, and a built-in powerful calculator.