Linux. Older versions of Executor also run on MS-DOS and NeXTSTEP. Executor was originally developed to run Mac programs on the NextStep platform and other MC680x0-based Unix systems like SunStation. During that time, two other similar products also existed for Unix systems: Liken from Xcelerated Systems Inc, and Equal from Quorum Inc. Current status Currently, Executor isn't being supported or developed. Clifford Matthews, ARDI's founder, released serial codes that worked until December 31, 2006, and again until the end of June 2007. On July 23, 2007, a new working serial code with no expiration date was released, while the status of Executor remains unchanged. After considering an open source release of the source code for some time, Matthews released the source code for the executor and syn68k applications on October 5, 2008, under a very permissive MIT-style license. References External links ARDI - Executor website GitHub - Executor project site Unofficial Mac Emulation: Executor/DOS under Win32 E-Maculation's Executor setup guide Executor 2000 (actively maintained fork) Compatibility layers Classic Mac OS