Hello Sascha! Let's switch to English as you suggested, with the mailing lists on CC. I've summarized the main points below. For those joining the discussion, I mailed Sascha after I read about his KDE SyncML work and introduced SyncEvolution+libsynthesis. Some relevant links: http://syncevolution.org/ http://moblin.org/documentation/syncevolution/direct-synchronization-aka-... As you said, libsynthesis wasn't available when you started your work on the KDE SyncML client/server. It's a real pity that we (Synthesis.ch for libsynthesis, Intel for the revampled SyncEvolution) couldn't get the open sourcing done sooner. On the other hand, this way you and the other SyncML projects which seem to happen this summer had a chance to experiment with the technology. That might make it easier to understand what libsynthesis and SyncEvolution are about. Regarding "libfunambol is good enough for a client": yes, after all I used it for over three years. But it has its limitations. In addition to the obvious lack of WBXML support (required for Google), you'll also find that the "pass KDE data to SyncML server directly" approach is too limited once you start doing interoperability testing with SyncML servers. I already mentioned vCalendar 1.0 support (mobical.net) and vCard extensions (X-SPOUSE); this is trivial to solve with libsynthesis and harder with libfunambol. But I'd like to go one step further: instead of switching to libsynthesis, I suggest that you consider integrating your work with SyncEvolution. libsynthesis is really just the raw engine. The app framework that you know from libfunambol is provided by SyncEvolution for libsynthesis. The "syncevolution" command line tool should work with a KDE backend right away. We are currently in the process of revising the D-Bus API for GUIs. The sync engine is already decoupled from the GTK GUI via D-Bus, but this was done in a rather ad-hoc fashion and we think this can be improved. It would be great to get your feedback, but as you are going on vacation (lucky you!), we'll have to give it a shot and then revise it when you come back end of September - assuming that you are interested, of course. -- Bye, Patrick Ohly -- Patrick.Ohly(a)gmx.de http://www.estamos.de/