I built an offline LLM that runs on Windows XP with 512MB RAM — no GPU, no cloud, free forever

#ai #opensource

Hey DEV community! I'm Panmauk, CEO of PANMOX — a small independent open source software project.

Today I want to share something we've been quietly building: NeuralXP.

What is NeuralXP?

NeuralXP is a real, working offline language model that runs as a native Windows XP application. Not a joke. Not a demo. A fully functional LLM you can download, install, and talk to — on hardware from 2001.

Why does this exist?

Most AI tools today require:

A monthly subscription
A modern GPU
An internet connection
An account with some company

We think that's wrong. AI should be accessible to everyone, including people running old machines. If your computer can run Windows XP, it can run NeuralXP.

How does it work technically?

Under the hood:

Model: Qwen2.5-0.5B (a genuinely capable small LLM)
Runtime: llama.cpp, compiled for Windows XP compatibility
UI: A native Win32 application — real .exe, real installer, real Windows UI
No Electron, no browser, no 800MB Chromium overhead

Minimum specs:

Windows XP SP2 or later
512MB RAM
Single-core CPU (500MHz+)
500MB disk space
No GPU required

What does it actually do?

It's a local chat interface. You type, it responds. Your prompts never leave the machine. No telemetry, no accounts, no network calls at all. It boots fast, runs light, and works completely air-gapped.

The philosophy

At PANMOX we build software that lasts. The version you install today should still work in 2046, on the same hardware, without asking permission from a server somewhere. The cloud took AI and put it behind subscriptions and logins. We're giving it back.