Compiling from source
The MacMiner source code is available on Github
The github project includes an Xcode project file. Assuming you have Xcode installed, download the project and double click that file and the MacMiner project will open in Xcode. Once it loads up you should notice a 'Run' button near the top left of the window - press that and the code will be compiled and the app will open attached to Xcode. To export your copy of MacMiner choose 'Archive' in the 'Project' menu and when the archive shows up export it, ideally signed with your own developer ID. If you encounter any problems following these steps, please raise an issue on the Github project or on the forum
The source will be updated to each 10.6 release version as it works on 10.6+, but has a few little features removed such as the pop up help windows. You can use the dependencies on Github or using Homebrew, a package manager for Mac, and compiling bfgminer, cgminer and/or cpuminer from their respective github pages. The miner backends are likely to be a version or two out of date on github, but you can use those in the latest MacMiner beta or compile your own.
If you don't find what you're looking for here, please check the forum