Horta Editorial & Sound is a post-production company founded by Sam Horta that worked on the following shows, movies and TV specials for Nickelodeon, Disney Television Animation, Hanna-Barbera, Cartoon Network, Film Roman and others. In 1999-2000, Horta Editorial was folded into Hacienda Post, founded by former Horta employee Timothy J. Borquez.
- Fat Albert and the Cosby Kids
- Challenge of the Super Friends
- The Bugs Bunny/Road Runner Movie (1979)
- Banjo the Woodpile Cat (1979) (Shorts) (in collaboration with Ryder Sound Services)
- Pac-Man (TV Series)
- The Secret of NIMH (1982)
- The Christmas That Almost Wasn't (1983)
- It's Punky Brewster
- Garfield in the Rough (1984)
- Garfield's Halloween Adventure (1985)
- Garfield in Paradise (1986)
- The Brave Little Toaster (1987)
- A Garfield Christmas (1987)
- Alvin & the Chipmunks (Season 6 only, music editing for DIC Entertainment)
- Garfield and Friends
- Garfield's Thanksgiving (1989)
- Bobby's World
- Talespin (select episodes)
- The Ren & Stimpy Show (first two seasons only)
- The New Adventures of Winnie the Pooh (final season only, uncredited)
- Darkwing Duck
- Winnie the Pooh and Christmas Too (1991) (uncredited)
- Capitol Critters
- Mother Goose and Grimm
- Goof Troop (select episodes only)
- The Little Mermaid (TV Series)
- Tom and Jerry: The Movie (1992)
- The Flintstones: I Yabba-Dabba-Do! (1993) (uncredited)
- Biker Mice From Mars (uncredited)
- Bonkers
- Rocko's Modern Life (first two seasons only, by season three, they only served as production sound team)
- Aladdin (TV Series) (select episodes only)
- The Mask (TV series)
- What a Cartoon (select episodes only)
- Happily Ever After: Fairy Tales for Every Child
- Hey Arnold! (first to fourth seasons only)
- Dexter's Laboratory (Seasons 1 and 2 only, in association with Twenty-First Century Entertainment)
- The Angry Beavers (Seasons 1 and 3 only)
- Cow and Chicken
- I Am Weasel
- The Brave Little Toaster Goes to Mars (1998)
- Oh Yeah! Cartoons (select episodes only)
- CatDog (seasons 1 to 3 only)
- The Powerpuff Girls (Seasons 1 and 2 only, in association with Twenty-First Century Entertainment)
- SpongeBob SquarePants (season 1 only)
- Grandma Got Run Over by a Reindeer (2000)