wxEmbedded is a project to bring support for small devices and PDAs to the wxWidgets library. There is currently support for all Windows Mobile (WinCE) PDAs, the iPhone, and all GTK+ based devices.
TotalCross (totally cross-platform) is a mobile development platform for PDAs and smartphones.
It makes it possible to develop portable Java applications that can be deployed on a wide range of smartphones without any adaptation in the source code.
Yet another miniature identd.
A rescue CD based on Gentoo amd64/i686 supporting nilfs2 and btrfs.