Jibberish won't ever work on the mac until its completely recoded. Thats because it was made with a programming language that only has compilers for windows. The only way to do it is to run windows using a virtual machine or boot camp.
O2 skiing (www.o2skiing.com)
already sorta works on a mac. I've been working with the creator and have been ported it to OS X but the only problem is making it so that it'll work on computers other than my own.