TXT Notepad: Meet TXT OS — An Open-Source AI Reasoning System in One .txt File

July 13, 2025

This content originally appeared on DEV Community and was authored by PSBigBig

What if I told you the next AI OS doesn’t need an app, an install, or even a line of code—just a .txt file?

I’m PSBigBig (the “Purple Star” who sometimes jokes about saving the world with pure logic).

And this is TXT OS: an open-source reasoning engine that turns any LLM (ChatGPT, Claude, Gemini, etc.) into an AGI-grade semantic thinker—using nothing but plain text.

What’s TXT OS?

One .txt file = a semantic operating system
No installs, no binaries, no network calls, no ads
Fully open-source, MIT-licensed, and free forever

Paste HelloWorld.txt into any LLM chat, and suddenly you unlock:

+22.4% semantic accuracy
+42.1% reasoning success rate
3.6× more stability (Benchmarks: GSM8K, Truthful-QA, temp 0.2)

How does it work?

The secret sauce:

WFGY Reasoning Engine — Four micro-formulas coordinate all reasoning
Semantic Tree Memory — Remembers logic structures across conversations
Knowledge Boundary Shield — Detects hallucinations before they happen

TXT OS is NOT a “prompt hack.” It’s a framework for true semantic memory, error correction, and modular reasoning.

Demo & Download

More coming soon

I’m also working on:

TXT: Blah Blah Blah — the first surrealist Q&A engine (semantic paradoxes, anyone?)
TXT: Blur Blur Blur — text-to-image with nearly zero hallucination
TXT: Blow Blow Blow — logic games, where the rules evolve

All are open-source, no sign-up, just logic.

Why?

Because I believe semantic reasoning should be as accessible as “copy, paste, go.”

Let’s see how far a .txt can take us.

Try it, break it, fork it, star it, roast it, or just drop me a line!

GitHub repo: [https://github.com/onestardao/WFGY/tree/main/OS]

Project homepage (all modules): [https://github.com/onestardao/WFGY]

Let’s see if the world is ready for “plain text OS.”

If you have feedback, ideas, or want to collab—comment below!

— PSBigBig (Purple Star)