Clang project is a C, C++, Objective C and Objective C++ front-end for the LLVM compiler. Its goal is to offer a replacement to the GNU Compiler Collection (GCC).

Asciidoctor is a pure Ruby processor for converting AsciiDoc source files and strings into HTML 5, DocBook 4.5, DocBook 5.0 and other formats.

GDAL is a translator library for raster geospatial data formats. As a library, it presents a single abstract data model to the calling application for all supported formats. The related OGR library (which lives within the GDAL source tree) provides a similar capability for simple features vector data.

This library is a wrapper for the Exiftool command-line application, written by Phil Harvey. It provides the full power of Exiftool to Ruby: reading and writing of EXIF-data, IPTC-data and XMP-data.

"AR PL Mingti2L Big5" is a high-quality Chinese TrueType font (bsmi00lp.ttf) generously provided by Arphic Technology to the Free Software community under the "Arphic Public License".