Mavericks-compatible CardDav and CalDav Server on PowerPC
I have an old PowerPC Mac Mini that I would like to set up as a CardDav and CalDav sync server for our household Mavericks computers to use for syncing their Contacts and Calendars, avoiding iCloud. The PowerPC Mac Mini is limited to running Mac OS X 10.5.8 Leopard (or Leopard Server). I have a legitimate copy of Leopard Server, but unfortunately, Leopard Server does not support CardDav (Contacts syncing).
I am looking for PowerPC / Leopard compatible solutions for a CardDav and CalDav server that is known to work on my PowerPC Mac Mini.
There are several tools out there, all of which require complex configurations, but I am concerned about the following:
* Compatibility with the old PowerPC Mac OS Leopard codebase.
* Compatibility with the Mavericks clients.
Does anyone have a running, working solution to provide CardDav and CalDav sync services to modern Mavericks clients from a PowerPC Mac running Leopard or Leopard Server?
Mac mini, Mac OS X (10.5.8), Leopard and Leopard Server