Armadillo is a Mac OS X application which facilitates the creation of Mac OS X Startup Items. Armadillo is free, open-source software develeoped using the Cocoa application programming interfaces. It is distributed under the terms and conditions of the Free Software Foundation's GNU General Public License, which should have accompanied this program.
That being said, if you find Armadillo to be a genuinely useful piece of software I ask you to please consider making a donation to support further feature development, bug fixes and web hosting.
You can visit the Armadillo website to keep up with the latest developments.
For information about how to use Armadillo, please consult the Help documentation which is available under the Help menu within the application.