NotesSync(http://www.notessync.com) syncronises PIM data of the first generation of Zaurus Linux PDAs between Qtopia Desktop and Lotus Notes.
lotus2z(http://www.photonicslab.org/zaurus.html) is a perl script that works in a LINUX environment to import Lotus Organizer 6.0 contact data into qtopia 1.5.5 (for Sharp Zaurus ROM V3.1). It gets all the contact data to the Zaurus. This script is not intended to do any synchronizing!
Handy(http://www.theossoft.net/handy.html) is a small console program to convert the output of Lotus Notes client version 5.x into a vCal Version 2.0 file and/or sends the appointments to a cellphone of type SIEMENS S45 and maybe S35 also.