Lingoo is a small Mac OS X (10.5+) application wrapper for the Google Translation online service. It employes powerful engine from the world leader in online services and bring the power of language translation to your desktop. Lingoo is implemented an background app hiding in the Menu bar with few hotkeys to activate the translation when it is needed.
Lingoo translator window is designed to fit all needs. By default it is represented my minimal window with a simple search filed, however, you can toggle the toolbar and switch the mode to a pure translator with big field for the source and destination texts.
Lingoo contains number of preferences to simplify the usage: it can run at login, it can automatically select the translated text or Put it into the Clipboard, it can read Clipboard data when called and immediately translate it with languages autodetection, it can also select the destination language depending on the source one with the language pair defined. It’s simple, it’s flexible, it employes the best translation service available it is free.
It’s right what I need and I believe it’s what you need too.