Sh is a programming language built on top of C++. It can be used to write shaders that run on top of modern graphics processing units (GPUs), or write stream programs that run on GPUs or CPUs. It is implemented as a C++ library, and allows programs to be generated at run-time using a number of metaprogramming techniques. Variants of programs for different cases can easily be generated, or programs can be generated entirely at run-time from some input data. The system is cleanly separated into a frontend and backend, and is hence portable.
Great Window Manager
I'm not kidding, this is the best window manager I've ever seen.
It's customisable down to hell and back, and does *everything* I ever wanted from a window manager - and it uses 0.0% CPU and 1.7% MEM on my P-II-400 with 128 MB RAM (i.e. the resource usage of blackbox with the comfort of something I've never seen before).
If you're interested in a good WM for gnome, you really should try sawmill!