The Apple Developer Connection Published "Developing Cross-Platform UNIX Applications with Mac OS X:"

Let's say that you are a Mac developer, but need to deploy your application to a Linux or Solaris server--what to do? As it turns out, Mac OS X makes it easy to develop applications then deploy them to other flavors of UNIX. This article discusses tools and techniques for developing code on Mac OS X for deploying on other UNIX platforms, and covers issues working with Perl, Python, Ruby, Java, C and C++ and more. The article is located on this Apple web page.