TinyCat - The online catalog and integrated library system for tiny libraries, powered by LibraryThing.
Toggl - Toggl is an online time tracking tool. It features 1-click time tracking and helps you see where your time goes. Free and paid versions are available.
Koha - Koha is the first free and open source software library automation package (ILS).
Harvest - Simple time tracking, fast online invoicing, and powerful reporting software. Simplify employee timesheets and billing. Get started for free.
DSpace - DSpace open source software enables open sharing of content that spans organizations, continents...
RescueTime - Time management software that shows you how you spend your time & provides tools to help you be more productive.