...Using markdown, you can easily create a web version of the presentation and support export. Supports multiple images hosting uploads, automatically inserts into the notes, and provides API to freely customize your own image hosting. Supports multiple images hosting uploads. Supports markdown writing app for presentations. Supports diagram editor. Supports thinking brain map. Git is the world's most advanced distributed version control system. GitNote has all the features of Git and does not need to rely on the local GIT environment.
Wiko, the wiki compiler, compiles wiki like files into html and LaTeX, combining easy wiki syntax, your preferred non-web text editor and svn/cvs control to write static webs, cientific articles or even blogs.
Narya is a forum/incubator software, based on a Python/Zope/MySQL platform. Emphasis on graphics support and collaboration for space and technology development. Compare PHP/MySQL forums.