In its first 4 years, GameRanger was a Macintosh-only multiplayer online gaming service. As well as being Macintosh-only, it was the only service of its kind on the Macintosh in the 90's.  Since Windows XP, GameRanger is offered for both...

GBMac is a fully featured commercial Game Boy emulator for 68K and PPC Macs.  It even comes with a palette editor to mimic the Super Game Boy color channels feature. Note: Documentation is in Japanese but the app is in english.  

GIFConverter is an utility that can open and save (convert) various 80's and early 90's graphics files, namely: GIF, Startup Screens, PICT, JPEG, TIFF, Paint, RLE, EPSF... All it does is allow you to convert them, but it has no real editing...

Gerry's ICQ was the best ICQ clone for classic Mac OS and was featured packed with functionalities that were missing in the first Mac versions of the genuine ICQ (from Mirabilis and later AOL) Before abandonning this project in 2004, Gerry...

v1.0 - Release Notes What is GSFTP ? With GSFTP you can efficiently and reliably fetch and transmit files to any kind of Internet server using FTP or SFTP. The goal of GSFTP is to be simple and to the point. GSFTP will work with servers...

GoMac places a taskbar at the bottom of your screen, letting you navigate between active applications and launch other applications. It closely imitates the look of the Windows95 taskbar and adds a couple of other features such as a sticky menus...

Desk Accessory Set a pattern to match (simple regex grep) inside text files, and/or perform a word count

An ambient music generator ("gong-like") hit the on/off button and it will generate the music, you can tweak the oscillator parameters, app made with MAX. Author's website page for Golden Ambient in year 2000  

It does what it says - and much more. Long before Apple included it, it was possible (though maybe not recommended on slower macs) to set any picture as desktop background (most classic MacOS versions only support background patterns). It allows...

GearBox is a cutting-edge Internet utility available exclusively for the MacOS from Rockstar Studios Inc. GearBox integrates comprehensive Internet configuration management, Internet diagnostics, and a sophisticated dialer into one tool. ...

A Customizable Genealogy Application for the Macintosh