Packrat is a media collection manager application for Android. You can use it to add books, CDs, games, movies, etc. to your collection by scanning their barcodes and organizing them onto shelves. You can let Packrat organize your items into smart shelves, or manually stack items onto shelves of your own creation. You can also track items you don't have yet on a "wishlist" shelf.
Space Exploration: Serpens Sector is a very long-running project to make a space exploration game in the vein of Strange Adventures, Star Control, and others. It's gone through a number of iterations and refinements over the years. In its current state, it is now gameplay-complete. The gameplay focuses on making interesting decisions balancing risk, reward, limited resources, the morale of your crew, and your reputation with the alien factions of the sector. The gameplay does not focus on combat.