Terry Davis in a blue polo shirt smiling

Terry Davis / TempleOS

Updated Mar 29, 2021 at 08:00AM EDT by andcallmeshirley.

Added Dec 24, 2018 at 12:24PM EST by Don.

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Terry A. Davis was a computer programmer known for being the sole developer of the TempleOS operating system. Having been diagnosed with schizophrenia, Davis gained much online notoriety for his bizarre behavior, which included using random text generators to communicate in online discussion forums, casual use of racial slurs, and paranoia and hostility to government agents, especially the CIA. In 2018, Davis was killed after being struck by a train while walking alongside railroad tracks.



In 2003, Davis began developing TempleOS as "J Operating system." The name was subsequently changed to "LoseThOS" and "SparrowOS" before becoming "TempleOS." The operating system used an original programming language, editor, compiler and kernel all designed by Davis, which included over 100,000 lines of original code. Davis claims much of the operating system's development was dictated by God, even claiming that the OS was meant to be God's third temple.


Davis uploaded numerous vlogs and held regularly livestreams on YouTube. After the channels were removed, an archive of his videos was created by the Terry Davis Archive channel (shown below).


On January 29th, 2013, a thread about Davis was created on Kiwi Farms.[2]

On November 25th, 2014, the Vice tech news site Motherboard[1] published an interview with Davis titled "God's Lonely Programmer." In the interview, Davis claimed he gave up being an atheist after speaking with God, describing himself as "basically like an atheist God has talked to." On June 8th, 2015, the programming blog Codersnotes[4] published a post titled "A Constructive Look At TempleOS."

On May 14th, 2017, YouTuber Mister Metokur uploaded an episode of his series Internet Insanity about Davis (re-upload shown below). Over the next two years, the video gathered upwards of 720,000 views and 3,300 comments.

On December 22nd, 2018, YouTuber Fredrik Knudsen uploaded a mini-documentary about Davis and TempleOS titled "TempleOS | Down the Rabbit Hole" (shown below). Within 48 hours, the video accumulated upwards of 437,000 views and 7,200 comments.

The following day, a picture of an elephant Davis created in TempleOS was submitted to /r/surrealmemes,[3] where it gathered mroe than 9,400 points (95% upvoted) and 240 comments (shown below).

This is 16 color, pleasant to reate. It would be unpleasant o draw with 16,777,216 colors.

Personal Life

Davis was born on December 15th, 1969, in West Allis, Wisconsin. Davis was the son of an industrial engineer and had seven siblings. Davis experienced his first manic episodes along with hallucinations of space aliens and government agents in 1996. After being diagnosed with bipolar disorder, Davis was diagnosed with schizophrenia and was declared unfit for employment. From then on until recent years, he would live with his parents, before being kicked out due to assaulting his father, and living out from his van.


On August 11th, 2018, Davis was killed at the age of 48 after being struck by a train while walking near railroad tracks in The Dalles, Oregon. Authorities were unable to determine if Davis had intended to be struck.

Search Interest

External References

Recent Videos 30 total

Recent Images 20 total

Top Comments


The guy built not a goofy, half-functional, broken piece of software, but rather, a full-on language, a compiler and assembler for it, an OS from that, and programs to run on that OS. That level of skill is a rare thing among even the most skilled programmers. Guy was smart as hell. It's a truly saddening tale that his mental problems destroyed his life. I wonder if he'd been properly treated, if he'd have ended up being another Wozniak, Gates, or Torvalds.


in reply to Steve

Davis received tons of help. Davis was kicked out of his home after he refused to take his medication for several weeks, and was arrested for assault after attacking his father in his home. They did take him to doctors, and he did receive treatment for his schizophrenia. I don't blame the parents, and I fully understand how difficult a decision it is when somebody you love is also a danger to your safety.

It might look like nobody helped considering how bad he got, but that's the scary thing about schizophrenia as bad as Davis'. Even when it's treated, it's still volatile. And when the schizophrenia drives them to not want to take their medication anymore, there's pretty much nothing you can do.


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