$template = "plantilla";
$category = "categoría";
$infobox = "cuadro informativo";

These are straight from wikipedia. I think they use the term "Infobox":

http://es.wikipedia.org/wiki/Plantilla:Infobox_Pa%C3%ADs

# pdpedia terms
$objectclass = "clase de objeto";

# page headers
$inlets = "inlets";
$outlets = "inlets";

"inlets" for both? in French and Portuguese, they used "entrada" and "salida" (whatever those terms are in those languages, I forget), so maybe that's appropriate in Spanish too.

.hc

$arguments = "argumentos";
$messages = "mensajes";

# infobox
$name = "nombre";
$description = "descripción";
$abbreviation = "abreviación";
$library = "librería";
$author = "autor";
$developer = "desarrollador";
$releaseVersion = "número de versión";
$releaseDate = "fecha de la versión";
$dependencies = "dependencias";
$license = "licencia";
$website = "página web";
$programmingLanguage = "lenguaje de programación";
$platform = "plataforma";
$operatingSystem = "sistema operativo";
$language = "ldioma";
$dataType = "Tipo de dato";
$distributions = "distribuciones";

Note: Inlets and oulets could be transtaled like "entradas" and "salidas", but... as the most anglicism pehaps is best don't translate

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