Yes, Sad Fact.
Luckily i have a Macbook Pro.
I wonder how much longer i can keep using this G4 PPC till nothing will basically supports it, or itll be so slow that i cannot bare.
If you have your calendars and contacts stored on iCloud, the iCloud website works on PowerPC.
https://forums.macrumors.com/threads/1467753/
Syncmate is actually more Windows Mobile. They've expanded into other areas, including the iPhone now, but it seems the latest version requires Snow Leopard.
I like SyncMate though, I have it on my other Mac and used it to keep my Entourage contacts (through Address Book) synced with my HTC Touch Pro.