Free PIM with SonyEricsson Interaction

To the point: http://www.fjsoft.at/en/

Excellent product, responsive developer. Essentially provides the same functionality as the Palm Desktop, but for SonyEricsson phones, including the modem hookup, file transfer, sync with itself, and sync with Rainlendar, full backup of the phone data, and the SIM card data, and some other nice features. Also worth noting is that it produces its data in some standard formats, such as VCF for the contacts, and iCal for the Calendar, and tasks, even though the files are named with a .DAT extension.

Long version: My Palm T5 died, and I found this to help keep my stuff up to date on the phone while the T5 was in the shop. The T5 was unrepairable, and is unreplacable, so I got a laptop under the warranty instead. Now I'm living without a PDA, just the SE w810i, and it's not so bad.

Re: RainLendar

If you haven't seen it before, it's a little calendar/task list that can sit on your desktop. Cool features - skinnable, configurable, macros/hotkeys with LUA, and an iCal file format. Also freeware, unless you want to sync over a network with another iCal file.