Which free video editing software is available for mac 10.6.8?

Good morning! : )

I'm current trying to create a recurring income for myself and family animating logo's and intro's. I do not at this stage have money to invest in video editing software, and yes I know that there are good cheap ones out there but unfortunately even those ones I can't afford. Please can someone assist in giving me the name of a good free video editing software that will work with Mac OS X version 10.6.8 - 2 GHz Intel Core Duo - 2 GB 667 MHz DDR2 SDRAM - Model Identifier iMac 4,1 (as you can see even my mac is a bit outdated, but never the less is was a gift and it does the trick : )

Many thanks,

Suenet