Rapid applications development tool and libraries for FPC
The Lazarus IDE is a stable and feature rich visual programming environment for the FreePascal Compiler. It supports the creation of self-standing graphical and console applications and runs on Linux, FreeBSD, MacOSX and Windows.
Audio converter and CD ripper for various formats
fre:ac is a free audio converter and CD ripper for various formats and encoders. It features MP3, MP4/M4A, WMA, Ogg Vorbis, FLAC, AAC, and Bonk format support, integrates freedb/CDDB, CDText and ID3v2 tagging and is available in several languages.
Comix is a user-friendly, customizable image viewer. It is specifically designed to handle comic books, but also serves as a generic viewer. It reads images in ZIP, RAR or tar archives (also gzip or bzip2 compressed) as well as plain image files.
a miniature early Macintosh emulator
Mini vMac emulates a Macintosh Plus, one of the earliest of Macintosh computers. It can run old Macintosh software that otherwise couldn't be used on recent machines. (So far available for MacOS, Windows, and X)
MyServer development has moved to GNU savannah since it became an official GNU Project: https://savannah.gnu.org/projects/myserver