I just reorganized the gmutils folder. All of the OS X versions are now in zip files.
http://mikerichardson.name/gmutils/Here's what all of the programs do:
GMCarbonizerBeta.zip - this lets you convert old (Mac OS Classic) GM games into newer Carbon games, so that they will run on a new Mac.
GMOnlineCarbon.zip - create 2 player online games. also compatible with SilverCreator easy sockets, so an SC game can talk to a GM game.
GMOnlineServerOSX.zip - this was never really used by anyone. basically you would run this server 24/7 and then people using your game would be able to connect to the server to find other players for matchups. it was really cool and it works completely, but again no one really used it except for maybe one game by Jason Steele.
GMToolkitOSX.zip - This is the latest version of GM Toolkit, it should already be bundled with GM though
GMhttpCarbon.zip - this lets you download files from the internet. for example you could download an image and then display it in your game using IMAGEFILE.
I moved the Classic versions into a separate folder since no one probably needs those anymore. There's some older versions of GM Toolkit in the oldgmtoolkit folder in case there's a problem with the current one.