All downloads are provided under the terms and conditions of the Eclipse Foundation Software User Agreement unless otherwise specified.
You may most easily install GEF using the Eclipse Update Manager and point it to one of the GEF Update-Sites.
If you prefer an update-site or an SDK archive, you can download it from here directly.
Translations packages can be downloaded from the Babel project downloads page (from GEF 3.4 onwards). Older translation packages (for GEF 3.0 - 3.2) can still be found here