TempleOS

🧩 1. Basic Information

Field —>Description
OS Name —>TempleOS
Developer —>Terry A. Davis (USA)
First Released —>2013 (final named version)
Latest Version —>TempleOS 5.03 (2017, final by Terry)
License Type —>Public Domain
Supported Platforms —>x86-64 (runs only on 64-bit PCs)
Still Active? —>⚠️ No new development (creator passed in 2018), but community preserves it

⚙️ 2. Kernel & Architecture

Kernel Type: Monolithic, written entirely by Terry in his own style

Architecture: Pure x86-64 — no support for 32-bit, ARM, or other platforms

No protected mode multitasking — runs in ring 0 for full speed (no user mode separation)

640x480 resolution, 16 color VGA graphics by design (to mirror early PC environments)

🌟 3. Key Features

Entire OS is a single developer’s creation, including kernel, compiler, editor, and even the shell

Uses a unique programming language called HolyC, a hybrid of C & C++ with custom features

Built-in text editor, file manager, command line, 2D & 3D graphics libraries

Includes “oracle” mode for random Bible verse output — Terry viewed TempleOS as a modern-day temple

Boots instantly, very small footprint (under 2 MB ISO)

📈 4. Version History & Important Milestones ✅

Version / Milestone —>Year —>Description
Early J Operating System —>2003–06 —>Predecessor to TempleOS, laid core design
LoseThos —>2008 —>First named OS by Terry, focused on programming
Renamed to TempleOS —>2013 —>Rebranded as a biblical project — “third temple prophecy”
TempleOS 5.03 —>2017 —>Last major release before Terry’s death
Community forks —>2018± –>Small patches & ports (like Mega64 OS), but no official continuation

🎯 5. Target Audience & Use Cases

Programming enthusiasts: experiment with low-level OS concepts & HolyC programming

Retro / hobby OS fans: see what a “from scratch” OS by one person looks like

Computer history researchers: unique piece of software culture

Note: not practical for daily use — designed mainly as an art/faith project

✅ 6. Pros & Cons

Pros —>Cons
Incredibly small, fast, boots in seconds —>No networking, USB, or modern driver support
Entire system is easily hackable in HolyC —>Runs everything in ring 0 — no memory protection
Fascinating artistic & spiritual vision —>Limited hardware compatibility (VGA only)
Public domain — fully free to explore —>Single-user, single-task focus — no multitasking

🎨 7. UI Demo & Visuals

TempleOS text-based home screen (command shell & file navigator)

Demo of drawing a simple 3D cube or particles using HolyC’s built-in graphics

HolyC editor window side-by-side with direct compile & execution

Oracle feature printing random Bible verses in colorful text

Small games like “After Egypt” or ASCII maze generators

📦 8. Ecosystem & App Support

Entire system revolves around HolyC scripting, with easy inclusion of graphics and sounds

No third-party package system — every program is built from source inside the OS

Comes with dozens of example programs, games, demos, and Bible references coded by Terry

🔐 9. Security & Updates

Runs everything in ring 0 (kernel mode) for simplicity & speed — no protection from misbehaving programs

No internet stack — cannot be network-attacked (by design, Terry said God told him no networking)

Security handled by physical isolation: it’s an air-gapped, purely local environment

No updates after Terry’s last release; enthusiasts simply keep archiving the ISOs

🌍 10. Community, License & Development

License: Fully Public Domain (CC0 style) — anyone can modify, redistribute, build upon it

Enthusiasts maintain GitHub mirrors & ISO archives (for historical preservation)

Discussed heavily on places like /r/TempleOS, retro computing forums, YouTube channels

Occasionally used in OS design lectures as an example of personal operating system vision