Mapnik is a toolkit for developing GIS applications. At the core is a C++ shared library providing algorithms/patterns for spatial data access and visualization. Essentially a collection of geographic objects (map, layer, datasource, feature, and geometry), the library doesn't rely on "windowing systems" and can be deployed in any server environment. It is intended to play fair in a multi-threaded environment and is aimed primarily, but not exclusively, at Web-based development. High-level Python bindings (boost.python) facilitate rapid application development, targeting zope3, django, etc.
yet another yuv viewer (yay) displays 4:2:0, 4:2:2, 4:0:0 YUV, and Y-only pictures and sequences (planar Y:U:V format). It tries to find geometry information such as _widthxheight somewhere in the path and filename (e.g. mobile_352x288.yuv or path/to/yuv/mobile_640x480x400frames/file.yuv).
Carina is an application written in C++ for viewing various 3D graphic file formats. While focusing on the xVRML file format, it also supports the X3D and VRML97 formats. Mostly for viewing files, it also contains some debug support to help people creating xVRML content. It can save any file it can open as xVRML. xVRML is an XML-based virtual reality language. Classroom testing has shown that new users who are already familiar with HTML can become proficient in xVRML with just a few weeks of study and practice.
Roadnav is an in-car navigation system capable of running on a variety of operating systems, including Linux, Windows, and Mac OS X. It can obtain a car's present location from a GPS unit, plot street maps of the area, and provide verbal turn by turn directions to any location in the USA. It uses the free TIGER/Line files from the US Census Bureau to build the maps, along with the GNIS state and topical gazetteer data from the USGS to identify locations.
Reveal is a simple EXIF metadata viewer and editor. Some of the fields provided are f-stop, shutter speed, ISO sensitivity, date and time, processing options like sharpness, saturation, and contrast, white balance, whether the flash fired and which flash mode was used, shooting, metering, and focus modes, camera sensor type, focal length and subject distance, digital zoom factor, copyright holder and photographer name, and more.