ticketing/helpdesk systems

i've been wanting for a while now to find an open source ticketing system that i actually like and that is 100% free.

i tried cerberus which is free for three agents and one email address, and i loved it, but i need it for more than three agents.

i had also tried otrs some time ago and not liked it, though i'm unsure why. when i saw that otrs2 was available for ubuntu i decided to try it in case for some reason i suddenly liked it... and for some reason i suddenly do!

it is clean and easy to both install and use. it does what i need it to do and doesn't do tons of extra stuff that i don't need it to do. it's 100% free, not any slower than you'd expect it to be and has an interface that your clients can log into to create their own new tickets and get status updates on their existing tickets. honestly i don't remember it being any different to this the first time i tried it, so i'm not sure why i didn't like it before. it's great!