GCstar is an open source application for managing personal collections. Detailed information on each item can be automatically retrieved from the Internet and the user can store additional data, such as the location or whom he/she has lent them to. The user may also search and filter the collection by criteria. GCstar is written in Perl and uses GTK+ for its GUI widgets. Current version manages these kinds of collections: GCstar is the successor to GCfilms, which only managed collections of movies.