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.
- Bugs Bunny in King Arthur's Court (1978)
- The Puppy Who Wanted a Boy (1978)
- The All-New Popeye Hour (select 1981 episodes, uncredited)
- Yogi's Space Race
- Tarzan and the Super 7
- Godzilla
- Jana of the Jungle
- Captain Caveman and the Teen Angels (seasons 2-3)
- Scooby's Laff-A-Lympics (season 2)
- Tarzan, Lord of the Jungle (seasons 3-4)
- Raggedy Ann and Andy in the Great Santa Claus Caper (1978)
- Fat Albert and the Cosby Kids (1985)
- Challenge of the Super Friends
- The Bugs Bunny/Road Runner Movie (1979)
- Banjo the Woodpile Cat (1979) (Shorts) (in collaboration with Ryder Sound Services)
- The Flintstones: Fred's Final Fling (1980)
- Thundarr the Barbarian
- Mork & Mindy/Laverne & Shirley/Fonz Hour
- The Smurfs (select 1984-88 episodes, uncredited)
- The Scooby-Doo/Scrappy Doo Puppy Hour
- Pac-Man: The Animated Series
- The Secret of NIMH (1982)
- The Christmas That Almost Wasn't (1983)
- It's Punky Brewster
- Garfield in the Rough (1984)
- The New Scooby-Doo Mysteries (select episodes, uncredited)
- The Jetsons (select 1985 episodes, uncredited)
- Galaxy High (uncredited, Sam Horta is credited as the sound effects editor)
- Garfield's Halloween Adventure (1985)
- Garfield in Paradise (1986)
- The Brave Little Toaster (1987)
- Yogi's Treasure Hunt (uncredited, Sam Horta is credited as music and effects supervisor)
- A Garfield Christmas (1987)
- Alvin & the Chipmunks (Seasons 1-5 only, season 6 with music editing for DIC Entertainment)
- Garfield and Friends
- Dino-Riders (episodes 1-2)
- Garfield's Thanksgiving (1989)
- Nick's Thanksgiving Fest (1989) (uncredited)
- 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 (select episodes only)
- Winnie the Pooh and Christmas Too (1991) (uncredited, in collaboration with Rich Harrison's editorial team)
- The Tom & Jerry Kids Show (later episodes, uncredited)
- Capitol Critters
- Mother Goose and Grimm
- Goof Troop (select episodes only)
- The Little Mermaid (TV Series)
- Tom and Jerry: The Movie (1992)
- When Lilly Laney Moved In (1992) (Shorts)
- The Flintstones: I Yabba-Dabba-Do! (1993) (uncredited)
- Biker Mice From Mars (uncredited)
- Psyched for Snuppa (1993) (Shorts)
- Bonkers (select episodes only)
- Liquid Television short "Smart Talk with Raisin" (1994)
- Rocko's Modern Life (first two seasons only, by season three they collaborated with Warner Bros./Audio Circus)
- Angry Cabaret (1994) (Shorts)
- Aladdin (TV Series) (select episodes only)
- Arnold: 24 Hours to Live (1994) (Shorts)
- The Dirdy Birdy (1994) (Shorts)
- The Mask: Animated Series
- What a Cartoon (select episodes only)
- The Baby Huey Show
- Happily Ever After: Fairy Tales for Every Child
- Hey Arnold! (first to fourth seasons only)
- Dexter's Laboratory (sound re-recording on episodes 7-13 and Season 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 (sound re-recording on seasons 1 and 2 only, in association with Twenty-First Century Entertainment)
- SpongeBob SquarePants (pilot and season 1 only)
- Dexter's Laboratory: Ego Trip (1999) (sound re-recording only, in association with Twenty-First Century Entertainment, both uncredited)
- Invader Zim (pilot only)
- Grandma Got Run Over by a Reindeer (2000)