7zip documentation

7zip is an awesome compressor and decompressor. After I discovered it, I install it as soon as I get a new machine, but some command line options are less than intuitive and finding a help is not always trivial. So, 7zip documentation is available on this site.

world wind documentation

worldwind is another great project, it is NASA project for exploration of terrains. I played with it, but I found it non-trivial to find their javadocs, so javadocs from the projects are available here.
Also, here is documentation of worldwind wms.