Dial! offers an easy way to communicate with your GSM mobile phone over the IR-port. It features fast access to numbers stored in the internal addressBook database, the ability to dial numbers quickly over the IR port, to write SMS messages up to 160 characters on your Palm and send them over your mobile, Flash SMS (SMS appears directly on the display of the receiving mobile), SMS report, store SMS in the outbox of your mobile, save SMS in the Palm Memopad after sending, and an optional provider database.
USB-TCP Bridge bridges communications between a Palm handheld connected with a USB cradle and a TCP/IP socket. It can be used, for example, with the GDB debugger (which normally connects to the Palm OS Emulator on TCP/IP port 2000) to debug on a Palm handheld instead of debugging on the Palm OS emulator. It can also be used to connect the Unix-based pilot-link synchronization tools to a Palm handheld on Mac OS X. There are many more features, like support for packaged redistribution with predefined settings, etc.
XeqTunnel is an HTTP tunneling package that makes Java client-server programming easier for applets and for applications. It can also be used to create wireless applications for high-end mobile phones, such as the Sony Ericsson P900. Only "one line of code" is needed to turn programs into distributed client-server applications.