SLADE

A Windows only Qt-based frontend for a bunch of other tools which can convert most input formats to common audio & video formats and containers.

UZDoom is a feature centric port for all Doom engine games, based on GZDoom, adding an advanced renderer and powerful scripting capabilities

Total CAD Converter converts CAD files to PDF, TIFF, JPEG, BMP, WMF, PNG, DXF, BMP, CGM, HPGL, SVG, PS, and SWF. Source formats include dxf, dwg, dwf, dwfx, plt, hg, hgl, hpg, plo, hp, hpl, hpgl, hp1, hp2, hpgl2, gl2, spl, svg, cgm.

A Port Distance Table providing 12,000 ports and 0.1 billion distance data with (S)ECA, Weather Forecast, Piracy Alert and many other powerful functions.