I've been a SDL Trados user for many years, since I decided, together with my business partner, to move to open-source software. OmegaT is a very stable program: I've been using it for many years and I've experienced just 2 or 3 crashes, mainly caused by lack of resources of my system. OmegaT is very fast, with lots of advanced features. The greatest proof of appreciation is the fact that I've based my professional life on it. I use it on a daily basis to earn my living as a technical translator. A key feature for me and my company is the "team project" feature, that allows several translators to work together on a project in real time.