ding-es-de is a Spanish-German translation dictionary for the free (GPL) dictionary lookup program ding by Frank Richter.
At the moment, it contains about 18,000 entries.
You can download the latest list here: es-de
The sources including some documentation are currently only available via CVS (see menu-entry "Source Code" above).
License: GNU FDL and GPL, Creative Commons cc-by-sa
You may also have a look at MobileDing and MacDing, which also include this dictionary.