Is any Mac software incompatible with the iMac G3 models?
The iMac G3 models are compatible with all Mac software that runs on a PowerPC G3 processor, that is compatible with OpenFirmware, and that is compatible with a version of the MacOS that is supported by the iMac G3 models. All iMac G3 models are capable of booting MacOS 9 and running MacOS 9 applications either natively or within the “Classic Environment” provided by compatible versions of MacOS X (MacOS X “Panther” 10.3.9 and lower on models with a 350 MHz or slower processor and MacOS X “Tiger” 10.4.11 on models with 400 MHz or faster processors). The iMac G3 models are not capable of running later versions of MacOS X.