Linux is not an OS. GNU/Linux is: https://www.gnu.org/gnu/linux-and-gnu.html
The name matters: https://www.gnu.org/gnu/why-gnu-linux.htmlJust try the live version of Trisquel and if you find it too slow (e.g., if you have less than 1 GB of RAM), take Trisquel Mini: https://trisquel.info/download
If you want to test the future Trisquel 7 (Mini or not), here are the ISOs: http://devel.trisquel.info/makeiso/iso/
