OpenNumismat
OpenNumismat is a free and open source software for organizing and managing a coin collection
GNOME Recipes
GNOME Recipes – free and easy to use open source recipe management software from the GNOME project
Krecipes
Krecipes – free open source recipe management software, cookbook from KDE
Gourmet
Gourmet is a free and open source software for organizing and editing recipes
Tellico
Tellico is a free and open source software for organizing various collections
GCstar
GCstar is a free open source multi-platform software for managing your collections
Colorpicker
Colorpicker a free and open source cross platform desktop software for determining the color on the screen
ColorPicker App
ColorPicker App – screen color picker application for Linux Desktop
sK1 Color Picker
sK1 Color Picker – advanced color picker application with magnify glass and palette management functionality
Gpick
Gpick is an free and open source advanced color picker and palette editing tool for Linux