Public evidence index · assembled 2026-09-16 · revision 3

Terry A. Davis

American electrical engineer and programmer who single-handedly wrote TempleOS — a 64-bit, public-domain operating system in his own language, HolyC — believing it to be the Third Temple prophesied in the Bible. His decade of solo work, schizophrenia, and prolific video blogging made him a singular figure of outsider art in computing.

Also known as Terrence Andrew Davis, Terry Davis

This index is partial, source-bounded, dated, and revisable. It is published by @ben, not by the subject. Claims cite their sources; contradictions are preserved rather than resolved.

Terry A. Davis was an American electrical engineer and programmer who spent more than a decade writing an entire operating system by himself — kernel, compiler, language, editor, file system, games, and documentation — because, he said, God told him to. TempleOS is simultaneously a real engineering achievement, a religious artifact, and one of the most documented cases of severe mental illness lived in public. The record does not ask you to choose between those readings; it asks you to hold all of them.

Identity and formation

Terrence Andrew Davis was born on December 15, 1969, in West Allis, Wisconsin, the seventh of eight children of an industrial engineer. The family moved repeatedly — Washington, Michigan, California, Arizona. He used an Apple II in a gifted elementary program and learned assembly language on a Commodore 64 in the early 1980s, programming through high school. At Arizona State University he earned a bachelor's degree and then, in 1994, a master's in electrical engineering; profiles report a 1440 SAT and a 3.63 GPA, figures sourced to his own telling. From 1990 to 1996 he worked at Ticketmaster in Tempe, programming the company's VAX systems.

Illness and revelation

Davis was a self-described atheist and scientific materialist until March 1996, when recurring manic episodes began — hospitalizations roughly every six months, a flight into the desert, a broken collarbone, a jail stay. He was diagnosed first with bipolar disorder and later with schizophrenia, and came to describe the episode as a revelation from God. Unable to work, he moved into his parents' Las Vegas home on Social Security disability. Between 2003 and 2014 he was not hospitalized again, and his online presence settled into a durable pattern: often incomprehensible or abusive on most topics, and — as observers consistently noted — always lucid about computers.

The work

Around 2003, as 64-bit computing reached desktops, he dusted off code he had written years earlier and began what became a life's work. The system appeared publicly as the J Operating System in 2004, became LoseThos in 2006, SparrowOS in late 2012, and TempleOS in 2013. It is a 64-bit, ring-0-only, single-address-map, non-networked operating system for recreational programming — self-hosting, with its own editor, compiler, 2D/3D graphics library, and the Red Sea file system, all at 640×480 in 16 colors with one-voice PC-speaker sound. He wrote it entirely in HolyC, a just-in-time-compiled language of his own design, "more than C, less than C++." In 2014 VICE measured the system at 121,176 lines of code — comparable to Photoshop 1.0 — every line his.

The software is inseparable from the theology. Davis said he was chosen by God to build the Third Temple prophesied in the Bible, and his site's charter described the OS as "God's official temple." The 640×480, 16-color display was, he insisted, a divine specification — "a covenant like circumcision" — so children could easily draw for God. Its centerpiece, the AfterEgypt oracle, stops a "high-speed stopwatch" on pseudo-random text at a burning bush; he treated the output as God's words, likened it to tongues and Ouija, and used it — plus the NIST randomness beacon — to ask God about war, death, dinosaurs, and favorite bands, publishing the results as "Terry Davis' Rants."

The public life

He posted hundreds of videos — code walk-throughs, demos, hymns, rants — on YouTube channels that were repeatedly terminated for vulgarities, and he was banned or restricted on Something Awful, Reddit, Hacker News, and OSNews. His belief that CIA agents stalked him produced the coinage "glowie," later adopted by far-right forums and documented by The Atlantic. Yet the reception was mostly sympathetic: TechRepublic and OSNews reviewed TempleOS favorably, programming communities made sustained efforts to accommodate him, and an engineer who knew him compared the solo build to one man erecting a skyscraper. In 2017 TempleOS was shown at an outsider-art exhibition in Bourgogne, France; Davis welcomed the attention but said he wished more people used the OS to speak to God. He called himself "the smartest programmer that's ever lived" — a boast the surviving work makes less absurd than it sounds.

Final months and death

In 2018 he stopped taking medication, believing it limited his creativity, and left his sister's home in Arizona for California and then Oregon. Homeless in The Dalles, he accepted fans' care packages but refused housing. On August 11, hours after uploading a final video — "Terry Davis: Rises to Throne," recorded on a bench at the Wasco County library, explaining he had deleted most of his videos so as not to "litter" the Internet — he was struck by a Union Pacific train while walking the tracks. He was 48. The engineer considered it suicide; investigators could not determine whether it was suicide or accident. The Dalles Chronicle confirmed his identity after fans worldwide called the paper about an unnamed homeless man. His family asked supporters to donate to mental-health organizations. The community archive — a terabyte of videos, site captures, and ISOs on the Internet Archive, plus the memorial mirror at templeos.org — is kept under his own public-domain dedication.

What the record does not settle

The soft spots are real: the line counts vary by source and date; the manner of death was never resolved; his post-1996 employment history is self-reported; and the true start of the codebase — circa 1993 by Wikipedia's account, or post-2003 per the VICE profile — is fuzzy. More fundamentally, sources disagree on what TempleOS is: religious vision, engineering feat, or symptom of schizophrenia. The index preserves all three readings rather than smoothing them over.

This index was compiled from public sources and does not imply the subject's endorsement. Citations live in the packet's source catalog.

Timeline by topic

Topics follow the event kinds supplied in this index. Each entry links to its full record in the chronological timeline. Dates retain the precision supplied by the publisher.

Birth (1)
  1. Born in West Allis, Wisconsinbirth[2][1]
Education and apprenticeships (1)
  1. Master's degree in electrical engineeringeducation[2][1]
Roles (1)
  1. Programmer at Ticketmasterrole[1][2][10]
Projects (3)
  1. J Operating System released publiclyproject[2][9]
  2. Renamed LoseThosproject[2][3]
  3. Renamed SparrowOSproject[2][3]
Media (3)
  1. VICE Motherboard publishes 'God's Lonely Programmer'media[9][11]
  2. 'TempleOS | Down the Rabbit Hole' documentarymedia[17]
  3. BBC Radio 4 airs 'Devotion'media[16][14]
Milestones (2)
  1. Renamed TempleOS; declares 'God's temple is finished'milestone[2][3]
  2. TempleOS 5.03 — final releasemilestone[3][6]
Other events (3)
  1. Onset of manic episodes and 'revelation from God'other[2][9][15]
  2. Homeless in Oregonother[13][15][2]
  3. Killed by a train in The Dallesother[13][14][1][2]

Timeline

  1. Born in West Allis, WisconsinbirthWest Allis, Wisconsin

    Terrence Andrew Davis, seventh of eight children; the family later moved across several states.

    [2][1]
  2. Programmer at TicketmasterroleTicketmasterTempe, Arizona

    Hired as an undergraduate; worked on the company's VAX operating systems in Tempe, Arizona.

    [1][2][10]
  3. Master's degree in electrical engineeringeducationArizona State University

    Completed a master's in electrical engineering at Arizona State University, after a bachelor's in computer systems engineering.

    [2][1]
  4. Onset of manic episodes and 'revelation from God'otherArizona / Las Vegas, Nevada

    Recurring manic episodes began, with hospitalizations, a desert breakdown, and a jail stay; he described a revelation that ended his atheism. Diagnosed first with bipolar disorder, later schizophrenia; he soon lived with his parents in Las Vegas on disability.

    [2][9][15]
  5. J Operating System released publiclyproject

    He began posting the 64-bit OS online under the name J Operating System; OSNews carried his write-up in 2005.

    [2][9]
  6. Renamed LoseThosproject

    The OS became LoseThos — a murky reference to a scene in Platoon — aimed, he wrote, 'primarily for making video games' with no networking.

    [2][3]
  7. Renamed SparrowOSproject

    A short-lived rename in late 2012.

    [2][3]
  8. Renamed TempleOS; declares 'God's temple is finished'milestone

    The final name took hold; weeks later his site announced the temple was complete — 'Now, God kills CIA until it spreads.'

    [2][3]
  9. VICE Motherboard publishes 'God's Lonely Programmer'media

    Jesse Hicks's long-form profile, built on a late-night email correspondence, became the definitive account of his life and work.

    [9][11]
  10. TempleOS 5.03 — final releasemilestone

    The last version of the operating system, still distributed as the finished temple.

    [3][6]
  11. Homeless in OregonotherOregon

    After leaving his sister's home in Arizona he traveled through California to Portland, then on to The Dalles; fans brought supplies, police were notified but received no complaints.

    [13][15][2]
  12. Killed by a train in The DallesotherThe Dalles, Oregon

    Struck by a Union Pacific train while walking the tracks; investigators could not determine whether the death was suicide or accident. The Dalles Chronicle's follow-up confirmed his identity after fans called the paper.

    [13][14][1][2]
  13. 'TempleOS | Down the Rabbit Hole' documentarymedia

    Fredrik Knudsen's feature-length episode became the most-watched telling of his story.

    [17]
  14. BBC Radio 4 airs 'Devotion'mediaBBC Radio 4

    The Digital Human devoted a half-hour to his life, interviewing the local reporter, the VICE writer, and fans who had met him.

    [16][14]

Themes

Works and projects

Appearances

Relations

Claims

Sources

  1. Terry A. Davis (Q22708720)Wikidata · reference · dataset · accessed 2026-09-16T00:00:00Z
  2. Terry A. DavisWikipedia · reference · article · accessed 2026-09-16T00:00:00Z

    Good Article; used for discovery and cross-checking, not as sole authority.

  3. TempleOSWikipedia · reference · article · accessed 2026-09-16T00:00:00Z
  4. TempleOS — official site (memorial mirror)templeos.org · archive · webpage · accessed 2026-09-16T00:00:00Z

    Davis's own domain; since his 2018 death it has been maintained by archivist trapexit as a memorial mirror and download host, carrying the family's donation request.

  5. templeos.org as Davis ran it (August 1, 2018 capture)Internet Archive Wayback Machine · archive · webpage · accessed 2026-09-16T00:00:00Z

    Capture from ten days before his death, preserving the site as he last maintained it.

  6. Terry A. Davis — TempleOS ArchiveInternet Archive · archive · dataset · accessed 2026-09-16T00:00:00Z

    Roughly 1 TB collection of his videos, site captures, ISOs, emails, and documents assembled by community archivists; public-domain marked.

  7. Terry Davis: Rises to ThroneTerry Davis (YouTube) · 2018 · first person · video · accessed 2026-09-16T00:00:00Z

    His final upload, recorded on a bench at The Dalles Wasco County Library hours before his death; also preserved on Wikimedia Commons.

  8. Terry Davis — Uses ThisUses This · 2014 · interview · webpage · accessed 2026-09-16T00:00:00Z

    Short Q&A in his own words about his hardware, software, and dream setup.

  9. God's Lonely ProgrammerVICE Motherboard · 2014 · interview · article · accessed 2026-09-16T00:00:00Z

    The definitive long-form profile, built on a long email correspondence with Davis; basis of the later Motherboard mini-documentary.

  10. TempleOS: an educational tool for programming experimentsTechRepublic · 2014 · archive · article · accessed 2026-09-16T00:00:00Z

    Sympathetic technical review; original page offline, cited via Wayback capture of 2015-04-16.

  11. God's lonely programmerOSNews · 2014 · reporting · article · accessed 2026-09-16T00:00:00Z

    Link-post to the VICE profile with a long reader discussion; OSNews had covered and argued with Davis since the LoseThos era.

  12. Creator of TempleOS, Terry Davis, has passed awayOSNews · 2018 · reporting · article · accessed 2026-09-16T00:00:00Z
  13. Man killed by train had tech followingThe Dalles Chronicle · 2018 · archive · article · accessed 2026-09-16T00:00:00Z

    Local paper's follow-up confirming the unnamed man killed by a train was Davis; original site offline, cited via Wayback capture of 2018-10-18.

  14. BBC focuses on local deathThe Dalles Chronicle / Columbia Gorge News · 2019 · reporting · article · accessed 2026-09-16T00:00:00Z
  15. The Troubled Legacy of Terry Davis, 'God's Lonely Programmer'The New Stack · 2018 · reporting · article · accessed 2026-09-16T00:00:00Z
  16. The Digital Human, Series 18: DevotionBBC Radio 4 · 2019 · reporting · audio · accessed 2026-09-16T00:00:00Z

    Half-hour radio documentary on Davis's life and death, with reporter Neita Cecil, writer Jesse Hicks, and fan Kenneth Malac.

  17. TempleOS | Down the Rabbit HoleFredrik Knudsen (YouTube) · 2018 · reporting · video · accessed 2026-09-16T00:00:00Z

    Feature-length video documentary, published four months after Davis's death; the most-watched account of his life.

  18. The Far Right's Fear of 'Glowies'The Atlantic · 2021 · reporting · article · accessed 2026-09-16T00:00:00Z

    Documents how Davis's coined slur 'glowie' was adopted by far-right forums for suspected federal agents.

Coverage and method

Scope as of
Coverage supplied by the publisher
  • biography
  • work
  • philosophy
  • projects
  • media
Method
public-person-index-v1
Tool
soulscrape
Contributors
  • Soulscrape research workflow
Assembled
Human review
No review status or review date is supplied. An assembly timestamp does not establish human review.
Open questions
See the supplied open questions

Open questions