The software lies within Games, more precisely Board. Our antivirus analysis shows that this Mac download is clean. The most recent installation package that can be downloaded is 162 KB in size.
From the developer:
NetTacToe is a multi-platform online game that allows you to play tic-tac-toe with users of Mac OS 9, Mac OS X, and Windows all around the world!
You may want to check out more software for Mac, such as Doublemill, which might be related to NetTacToe.