State-of-the-Art AI.
All on Your PC.
Completely Free.
Not another web app that trains on your data. Zosma Cowork runs entirely on your machine. Your context, your files, your prompts — all stay on your PC, not in a browser tab like ChatGPT or Perplexity. Tell it what you need in plain English. It plans, executes, and reports back.
See Zosma Cowork in Action
Watch Zosma Cowork create 2 beautiful designs for a mobile app with a clickable prototype.
Which tool is right for you?
Zosma Cowork is built for one specific need: local-first, private AI. Here's an honest look at how it compares to the tools you already know.
| Feature | Zosma Cowork | ChatGPT | Claude.ai | Perplexity |
|---|---|---|---|---|
| Where it runs | Desktop app — your machine | OpenAI cloud | Anthropic cloud | Perplexity cloud |
| Your data | Stays on your device | OpenAI servers | Anthropic servers | Perplexity servers |
| Offline capability | Yes — with a local model | No | No | No |
| Price | Free — open source | Free or $20+/mo | Free or $20/mo | Free or $20/mo |
| Agent model | Multi-agent pipeline | Single assistant | Single assistant | Single assistant |
| Source | Open — Apache 2.0 | Proprietary | Proprietary | Proprietary |
Choose Zosma Cowork if
- You work with sensitive, confidential, or proprietary information
- You want a fully local, offline-capable AI workspace
- You prefer free, open-source software you can audit and extend
- You need a coordinated multi-agent pipeline — not just a chatbot
ChatGPT / Claude.ai are a better fit if
- You need the widest plugin and integration ecosystem (ChatGPT)
- Real-time web search is your primary workflow (Perplexity)
- Cloud-hosted data is acceptable for your use case
- You prefer a web interface with zero installation
The desktop AI work harness that keeps your data on your PC
Zosma Cowork is a free, open-source desktop AI assistant that runs on your machine — not in a browser tab. Your files, context, and workspace stay on your PC. Connect any AI you trust — cloud or local model via Ollama — and keep every prompt inside your own hardware.
Everything a Web AI Tool Can't Give You
Privacy. Freedom. No coding. No web interface required. Just a harness that works on your terms.
Free. No Subscription. No Catch.
No $20/month per user. No $200/seat. No “free trial” that asks for your credit card. Zosma Cowork is free and open source forever. Pay only for the AI brain you plug in — as little as ₹500/month.
Your Data Never Leaves Your PC
Unlike ChatGPT, Perplexity, or Claude.ai — Zosma Cowork runs entirely on your machine. Your context, files, and conversations stay local. Use a local AI model for zero data leaving your computer. No cloud, no data collection, no training on your secrets.
No Coding. No Jargon. Just Talk.
Speak normally — “write a competitor analysis,” “draft an email to our investors,” “find broken links on our website.” Zosma Cowork understands plain English. No prompt engineering. No technical setup. No learning curve.
Not a Chatbot. A Full Workforce.
ChatGPT talks. Zosma Cowork does. Multiple AI agents coordinate — one plans, one executes, one verifies, one reports. They work together automatically and deliver completed work, not conversational dead ends.
Built on pi SDK — Open-Source Harness
Zosma Cowork is built on pi SDK, the open-source minimal agentic harness. A lean, extensible engine built for reliability. Enterprise-grade capability in a free desktop app.
Ready in 2 Minutes. No Signup.
Download. Install. Open. Start working. No account creation, no onboarding calls, no “schedule a demo.” It's a desktop app that respects your time and your privacy from the first click.
Agent Pipeline: Coordinate → Verify → Report
Zosma Cowork doesn't just chat — it deploys multiple AI agents that work together like a real team.
Coordinate
Define the task. Agents decompose it, assign roles, and plan execution.
Execute
Agents work in parallel — researching, analyzing, generating, building.
Verify
A dedicated verification agent checks every output for accuracy and quality.
Report
Verified results are compiled into a clear report. No manual review needed.
Frequently Asked Questions
How Zosma Cowork keeps your work private, local, and free.
Download Zosma Cowork
Free. Open source. No subscription required. Select your operating system below for install instructions.
Install on macOS
Or install via Homebrew — no code signing warnings, automatic updates:
brew tap zosmaai/tap
brew install --cask zosma-coworkbrew upgradeYour Data Stays on Your PC. Not in a Browser Tab.
Free. Private. Ready in 2 minutes. No signup, no data collection, no web interface — just a harness that works on your machine.