DEV Community: PromptOS

PromptOS - A desktop AI agent that actually controls your machine — not just a chatbot

PromptOS — Tue, 21 Apr 2026 15:49:38 +0000

Prompt OS is an open-source Python desktop app that gives any LLM direct access to your local machine through a real agentic loop.

Capabilities

It doesn't just answer questions—it takes action. Prompt OS chains tools together until the task is actually done by:

System Control: Runs shell commands and executes Python scripts.
Web & Browser: Controls your browser and searches the web.
Document Processing: Reads PDFs, DOCX, and XLSX files.
Vision & Context: Interprets your screen via vision models and manages your clipboard.

Real-World Examples

User: "What's eating my RAM?"

Prompt OS: Runs the necessary system commands and identifies the processes for you.

User: "Rename all images in my Downloads by date."

Prompt OS: Writes the Python script and executes it autonomously.

Supported Providers

Switch between your favorite LLMs directly from the GUI:

Anthropic
Google
OpenAI
Groq
OpenRouter
And more...

Note: Two providers are completely free with no API key required.

Privacy & Open Source

Local First: Everything runs locally. Your memory, keys, and system prompts are all stored in plain files you can inspect and edit.
Open Source: Released under the MIT License.