Go For It
Go For It – free and open source software for creating to-do lists with a built-in timer
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
Buka
Buka is a book manager with a simple and minimalistic user interface for organizing and reading PDF books
csBooks
csBooks – manager and reader of eBooks in PDF, EPUB and MOBI formats
Bookworm
Bookworm – free and open source software simple, focused eBook reader for Linux