The choice of CAT tools for professional translators used to be limited and they tended to be expensive. This is no longer the case and translators can now choose from a variety of tools, including inexpensive ones. This series of five videos covers inexpensive, yet fully-featured CAT tools costing from 0 to 139 euros.
This video is about OmegaT, a free, open-source, multi-platform (Windows, Mac, Linux) tool that just turned 10 years old and has a strong following.
The video shows how to create a project with associated resources (including a translation memory) and how to translate a short Word document in the .docx format.
Update: also see the newer video on OmegaT 4.0.