This review is for the standalone version 7.x I use: It's always there when you need it, it's quite pleasingly customisable (app and background colors, font size for readibility, window size and placement on your screen, and even transparency, if you must...), plus you can search and add free specific dictionaries that people have put together online. It has a small footprint and remains as you installed it. It can even be reinstalled over the years with no fuss as all software used to be, amazing! It also shows defitinions from wikipedia (when they exist), which is quite handy, too. If you're a translator that does not care for the new stuff and if you can still find it, purchase version 7.x so you can keep it and forget newer versions with the online integration options, etc. I have not checked its new versions, but it seems to translate up to 13 languages and works with all major OSs. You can use its default shortcut key (F10) to call it up, say within Microsoft Word, though this does not always work if other apps you have conflict with it. As a real plus it can also convert any currency, measurement or time values to your local. It's a handy swiss-army tool for a translator for quick searches. For technical translations you can add to its power with the free area-specific dictionaries and glossaries you can plug-in to it, as I mentioned above. It also has word-to-speech that you use to pronounce a given word, though it is, of course, computer speech.

The use of babylon is crucial in my interpreting and translation jobs.

Good quality of translations, doesn't change the context, auto-detection of language, has a free version and most importantly has a big range of languages.