Detached Solutions is a group that serves as an umbrella for a number of different math and calculator related projects on handheld platforms. We specialize in projects coded for the TI series graphing calculators, but have branched out to other areas as well. We're interested in proposals to extend our current software, as well as new ideas. Among the open source projects we host are:
1) Graph3 - A 3D graphing program. This program was extended in GSoc 2006 to provide support for differential equation graphing.
2) usb8x - A USB host controller driver for the TI-84 Plus. It allows the calculator to connect to peripheral devices, such as mice, keyboards, hard drives, etc.
3) MirageOS - A popular shell/file manager for the TI-83 Plus and TI-84 Plus. It was originally closed source but has recently been released under the GPL.
4) Cabamap - A fast, arbitrary precision integer calculation library.