OpenSimulator is a multi-platform, multi-user 3D distributed virtual environment platform. Out of the box, it can be used to simulate virtual environments similar to that of Second Life. These can be used as social virtual worlds or for specific applications such as education, training, and visualization. Access is via the regular Second Life open-source viewer or via third-party clients. There are a number of private and public deployments of OpenSimulator, including OSgrid, which has over 8000 regions hosted by independent individuals and organizations spread over the Internet.
PFFFT is a very small 1D Fast Fourier Transform library based on the venerable FFTPACK v4. It handles single precision real and complex transforms. Computations take advantage of SSE1 instructions on x86, Altivec on PowerPC, and NEON on ARM, allowing it to achieve a performance level that is not too far from the very best FFTs (FFTW, Intel MKL, Apple vDSP).
PHPStateMapper is a PHP library for drawing a map with areas shaded by varying degrees of intensity based on data given as a simple list. It exports a PNG image in a configurable size and color. It is appropriate for generating images for use in reporting and analytics. Data can be loaded programmatically or from a comma separated values (CSV) source file.
POSIXplorer will help you find, navigate, and open files on Linux, Mac OS, or most POSIX systems. You just type the command and then a regex for which you'd like to search. By default, it searches filenames and excludes class and other data files. It looks recursively down from your current directory. If you'd like to search through file contents, use the '-c' flag. When using -c, after the regex, you can list a file pattern, such as * (the default) to match any file or *.java to match Java files. After searching on your query, it presents a list of results and lets you type a number to select one for opening in the editor you have defined in the EDITOR environment variable, or by default Vim. After quitting the editor, you come back to your results and can continue opening files or execute a new search. To run a new search, just type the query and the script will detect that you did not intend to enter a file number. Note that in content searches with -c, only a new content query can be entered, not a new file filter.
Piccolo2D is a toolkit that supports the development of 2D structured graphics programs, in general, and Zoomable User Interfaces (ZUIs), in particular. A ZUI is a new kind of interface that presents a huge canvas of information on a traditional computer display by letting the user smoothly zoom in to get more detailed information and zoom out for an overview. It uses a "scene-graph" model that is common to 3D environments. This means that Piccolo maintains a hierarchical structure of objects and cameras.