syncevolution : SyncEvolution synchronizes personal information management (PIM) data such as contacts, appointments, tasks and memos using the Synthesis sync engine, which provides support for the SyncML synchronization protocol. ( http://syncevolution.org/ )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a gentoo-playground
For Paludis use this rsync : rsync://gentoo.zugaina.org/gentoo-playground-portage
If you have a problem : ycarus(-at-)zugaina.org