Most BeOS programs compile and run with little or no changes and Bill has already ported the BeOS CPU monitor, Pulse, to the system. "Existing Atheos programs will need changes to compile. I haven't found one that took me longer than a few minutes to 'convert'. Where Atheos and BeOS use different semantics, I chose the BeOS method", Bill said. Deskbar and Tracker are reportedly difficult to port as they depend on very BeOS-specific APIs and behaviors, but Bill says that it is getting there, especially because the 2.4.x kernel supports node monitoring.
The AtheOS community took the announcement a bit bitter as they would not like to see a forking of AtheOS, but reportedly, Kurt Skauen (the original author of AtheOS) hasn't touched the AtheOS source code in five months, as he is taking a break from development for now (which is a usual thing for Kurt, he has done so twice in the past). However the despiration and frustration from AtheOS coders who would like to see more AtheOS development is now at high levels (Kurt does not accept patches or new code for his OS, so everyone is dependant on Kurt when it comes on the AtheOS future).
OSNews featured a review of AtheOS' latest version some months ago.