Question: In 2015, Matt Stone listed this episode of South Park as his third favorite that used a screen-capturing program for what operating system?

Context paragraphs:
Chickenlover: "Chickenlover" is the fourth episode in the second season of the American animated television series "South Park".  The 16th episode of the series overall, it originally aired on Comedy Central in the United States on May 27, 1998.  The episode was written by series co-creators Trey Parker and Matt Stone, along with David R. Goodman, and directed by Parker.  In the episode, Officer Barbrady resigns as South Park's only police officer because of his illiteracy.  Anarchy ensues, just as chickens are mysteriously being molested across South Park.  Barbrady enlists the help of the boys to learn to read and discover who is molesting the chickens.  Cartman, meanwhile, masquerades as a police officer.

South Park (season 15): The fifteenth season of the American animated sitcom "South Park" began airing on Comedy Central on April 27, 2011 and ended on November 16, 2011.  In response to reactions to the mid-season finale episode "You're Getting Old", which seemed to insinuate that creators Trey Parker and Matt Stone were wrapping up the series, Comedy Central proclaimed through the media that "South Park" was renewed for two more seasons, and the duo were signed through 2013.  Shortly before the airing of the season finale episode "The Poor Kid", "South Park" was extended again until 2016, taking the show to 20 seasons.  Parker was the director and writer for all episodes, and Robert Lopez was the writer in this eleventh episode for the fifteenth season.

Major Boobage: "Major Boobage" is the third episode in season 12 of the American animated television series "South Park".  The 170th episode of the series overall, it originally aired on Comedy Central in the United States on March 26, 2008.  The episode was co-written by series creators Trey Parker and Matt Stone; it was the first South Park episode since 2000 not solely written by Parker, ending a streak of 120 consecutive straight solo episodes.  The previous episode co-written by Stone was "The Tooth Fairy's Tats 2000".

Instant-on: In computers, instant-on is the ability to boot nearly instantly, thus allowing to go online or to use a specific application without waiting for a PC's traditional operating system to launch.  Instant-on technology is today mostly used on laptops, netbooks, and nettops because the user can boot up one program, instead of waiting for the PC's entire operating system to boot.  For instance, a user may want to just launch a movie-playing program or launch an internet browser, without needing the whole operating system.  There are and were true instant-on machines such as the Atari ST, as described in the Booting article.  These machines had complete Operating Systems resident in ROM similar to the way in which the BIOS function is conventionally provided on current computer architectures.  The "instant-on" concept as used here results from loading an OS, such as a legacy system DOS, with a small hard drive footprint.  Latency inherent to mechanical drive performance can also be eliminated by using Live USB or Live SD flash memory to load systems at electronic speeds which are orders of magnitude faster.

Make Love, Not Warcraft: "Make Love, Not Warcraft" is the eighth episode in the tenth season of the American animated television series "South Park".  The 147th episode overall, it first aired on Comedy Central in the United States on October 4, 2006.  In the episode, Cartman, Kyle, Stan, and Kenny enjoy playing the popular massively multiplayer online role-playing game "World of Warcraft".  When a high level player goes around killing other players in the game, they start playing the game every day to try to stop him.  The episode was written and directed by series co-creator Trey Parker.  In 2015, he and co-creator Matt Stone listed it as their third favorite episode of the series.

Conjoined Fetus Lady: "Conjoined Fetus Lady" is the fifth episode in the second season of the American animated television series "South Park".  The 18th episode of the series overall, it originally aired on Comedy Central in the United States on June 3, 1998.  The episode was written by series co-creators Trey Parker and Matt Stone, along with David R. Goodman, and directed by Parker.  In the episode, South Park Elementary's dodgeball team travels to China to compete for the dodgeball championship, while the town of South Park pays tribute to the school nurse, who is living with conjoined twin myslexia.

TempleOS: TempleOS (formerly J Operating System, SparrowOS and LoseThos) is a biblical-themed lightweight operating system created over the span of a decade by the American programmer Terry A. Davis.  The software is a x86-64 bit, multi-tasking, multi-cored, public domain, open source, ring-0-only, single address space, non-networked, PC operating system for recreational programming.  The operating system was designed to be the Third Temple according to Davis and uses an interface similar to a mixture of DOS and Turbo C.  Davis describes the operating system as a modern x86-64 Commodore 64 with a variation of C (named HolyC) in place of BASIC.

Snapz Pro X: Snapz Pro X is a utility program for macOS developed by Ambrosia Software.  It is designed to record movie-like screenshots of a computer monitor doing various actions, such as a user moving their mouse across the screen, clicking on desktop icons, typing text, et cetera.  It has been used commercially in the production of books, such as O'Reilly Media's series, "The Missing Manual," and others.  The program was also used by South Park to create the Make Love, Not Warcraft episode.

Eric Cartman: Eric Theodore Cartman, often referred to as just Cartman, is a main character in the animated television series "South Park", created by Matt Stone and Trey Parker, and voiced by Trey Parker.  Cartman, generally referred to by his surname, is one of four central characters in "South Park", along with his friends Stan Marsh, Kyle Broflovski, and Kenny McCormick.  Cartman first appeared, originally named Kenny, in prototypical form in a 1992 animated short "Jesus vs. Frosty", and a 1995 animated short "Jesus vs. Santa", and first appeared on television in the pilot episode of "South Park", "Cartman Gets an Anal Probe", on August 13, 1997.

Chickenpox (South Park): "Chickenpox" is the tenth episode in the second season of the American animated television series "South Park".  The 23rd episode of the series overall, it originally aired on Comedy Central in the United States on August 26, 1998.  The episode was written by series co-creators Trey Parker and Matt Stone, along with Trisha Nixon, and directed by Parker.  In the episode, the parents of South Park intentionally expose their children to the chickenpox disease.

Supporting paragraphs: Snapz Pro X Make Love, Not Warcraft
Answer: macOS