MachTen is the only Macintosh product that combines UNIX and MacOS functionality. Based on BSD4.4 and the Mach kernel, MachTen brings the power of UNIX to your desktop at an extremely attractive price point.
It is POSIX compliant and includes an industry-standard UNIX API. Applications that run on MachTen should be able to run on other platforms with a simple recompile. MachTen is implemented as a hyper-portable "UNIX virtual machine" for MacOS, and runs on all Macintosh platforms (PowerPC and M68K). Coupling MachTen with Apple's new G3 and G4 machines creates a high-performance UNIX Workstation.