Fink is a collection of open source programs built for OS X. These programs are largely available on Linux and on Windows via Cygwin. Another similar system for OS X is Mac Ports, which uses a ports system similar to FreeBSD's port system. Fink uses DEB packages and is more similar to Debian's package management style, although the Fink front-end to build the .deb packages is unique and quite robust. As a result, Fink makes it easy to get development tools on the Mac. With it, you can install server programs like MySQL and Apache, or development tools like Subversion and Git. Fink makes the installation of, and continued upgrading, of these tools extremely simple.