Wiki about the Android operating system.

This wiki was originally created to be a development home for repurposing the HP-20b calculator, but has since grown to support several repurposing projects. It is our hope that this grass-roots approach to calculator hacking will expand to include other many HP calculator models and open-source projects.

A Wiki about the Tcl programming language and the Tk graphical toolkit.

German wiki about Ubuntu touch.

Executable Wiki: non-linear, text-based shell. I am not explaining this well, take a look at the screencasts.

Despite the availability of many excellent books and scientific articles and daily discussions on comp.lang.fortran, information about modern Fortran programming is sometimes difficult to find. There is a need for something that changes faster than books, papers, and documentation, but is more persistent and organized than a newsgroup. The Fortran Wiki aims to fill this void. Its mission is to provide an open and community-driven venue for documenting and discussing all aspects of the Fortran language, from compilers and standards and best practices and design patterns.

Discussion of different ways to write web articles.

On-line reference to C++ and its standard libraries.

An alternative to Wikipedia, using stricter quality control. "Our growing number of editor-approved articles are reliable and of world class quality, rivaling the best printed encyclopedias."