Outbound Systems, Inc., was an American computer company based in Boulder, Colorado. Founded by Warren Conner in 1989, the company offered Macintosh clone computer systems in various portable form factors between 1989 and 1991. It left the Mac conversion business in 1992 to build Windows-based desktop computers before going bankrupt in 1993.

A Macintosh clone is a computer running the Mac OS operating system that was not produced by Apple Inc. The earliest Mac clones were based on emulators and reverse-engineered Macintosh ROMs. During Apple's short lived Mac OS 7 licensing program, authorized Mac clone makers were able to either purchase 100% compatible motherboards or build their own hardware using licensed Mac reference designs.