The game is played with YOU at the bottom of the screen. At the top is a random assortment of colored shapes ("gems"). As time goes on, more gems appear at the very top of the screen, pushing the rest downwards. The game is over when the gems reach the bottom.

Hierarchy Viewer allows you to debug and optimize your user interface. It provides a visual representation of the layout's View hierarchy (the Layout View) and a magnified inspector of the display (the Pixel Perfect View).

TiLP2 is a Texas Instruments hand-helds <-> PC communication program for Linux. It is able to use any type of link cable (Gray/Black/Silver/Direct Link) with any calculator. See http://lpg.ticalc.org/.

BitTorrent is a tool for distributing files. It's extremely easy to use - downloads are started by clicking on hyperlinks. Whenever more than one person is downloading at once they send pieces of the file(s) to each other, thus relieving the central server's bandwidth burden. Even with many simultaneous downloads, the upload burden on the central server remains quite small, since each new downloader introduces new upload capacity.