There are a plethora of opensource tools available that will help organize your test efforts. I recently blogged about <a href=”http://itknowledgeexchange.techtarget.com/software-quality/eight-free-tools-to-automate-your-software-test-processes/”>Eight free test tools to automate your software test processes</a>. These aren’t functional automation tools… just tools that will help you get organized. It sounds like you might be looking for a Test Management system so TestLink might be one you want to check into.
But for a big list of OpenSource Test Tools take a look at: <a href=”http://www.opensourcetesting.org/”>opensourcetesting.org</a>.