One who writes glosses.
A legal scholar of the Middle Ages, (specifically) one who authored glosses on legal texts (especially the Corpus Juris of Justinian), typically distinguished from the later commentators who wrote in extended prose and adopted a more pragmatic form of jurisprudence.
A person who converts speech, text, film, or other material into a different language. (Contrasted with interpreter.)
One that makes a new version of a source material in a different language or format.
A computer program that translates something from one language to another using machine translation.