Download of GSport 0.31 for Mac was available from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. This free software for Mac OS X is a product of GSport Contributors. Please check the Mac app with an antivirus before launch as it is downloaded from the developer's website, and we cannot ensure that it is safe. The software relates to Developer Tools.
From the developer:
GSport is a portable (in the programming sense) Apple II GS emulator, based on the KEGS cross-platform IIgs emulator by Kent Dickey. The base emulator builds and runs on all of the same platforms that KEGS did, and the new capabilities are being integrated as contributors have time and interest.
You may want to check out more Mac applications, such as GSplus, which might be related to GSport.