Go4Launch is a simple application that allows users to easily add startup tasks to their OS X system using launchd services. It creates a template shell script that users can modify to add their own commands. This app is perfect for those who want to do-it-themselves.
Wineskin Winery creates Mac OS X ports/wrappers for Windows programs/games, with an easy-to-use GUI, integrated Wine, X11 and an installer.