pywincedb(http://sourceforge.net/projects/pywincedb/) is a Python module to access native Windows CE databases and set of tools to manipulate them (conversion to/from XML, migration).
Psion:: ::Db idpO Handle Psion palmtop computer database [..] IANPX HP200LX:: ::DB cdpO Handle HP 200LX palmtop computer database GGONTER ::DBgui cdpO Tk base GUI for HP 200LX db files GGONTER
SyncLICE (Sync Linux and CE) sets up a PPP connection over a serial line between a Linux box and a Windows CE device using pppd. Upon connection ipchain rules are created, giving the CE device a TCP/IP connection needed for communication.
Suricate(http://suricate.sourceforge.net/) makes the Meerkat open wire service usable on handheld devices, wireless email appliances, and interactive pagers. It is meant to address the needs of people that have email provided on their handheld devices but no Web access. Suricate will push the wire service content to the user. Suricate currently provides Meerkat content for several channels/profiles such as Apache, Linux, Mozilla, MySQL, Perl, PHP, Python, Wireless, and XML.
Microwindows(http://microwindows.censoft.com/) is an Open Source project aimed at bringing the features of modern graphical windowing environments to smaller devices and platforms. Microwindows allows applications to be built and tested on the Linux desktop, as well as cross-compiled for the target device. Microwindows' genesis was with the NanoGUI project, and has now been combined into a single distribution. The Win32/WinCE API implementation is known as Microwindows, and the Xlib-like API implementation is known as Nano-X.
Applications for other PDAs you may find at Linux and PDAs(pda_linux.html).