Master Code
Locally.
The developer platform for high-intensity, terminal-first learning.
Free for the community. Build any course, in any language.
Focus Mode, On.
A zero-distraction environment where documentation, requirements, and verification live right where your code does.
Local Host
Your IDE
Interactive
Live AI
Multi-view
Workspace
Elite Flow.
Zero Friction.
1. Select Your Goal
Browse the community library or initialize from any public repository. Own your path.
2. One Command Init
Run `npx progy init -c [course]`. Everything is configured locally in seconds.
3. Real-time Verify
Start coding. Save your progress and click 'Run tests' to verify your solution instantly.
✔ Cloning Course: Rust Mastery
✔ Preparing local workspace...
✔ Server started on localhost:3000
Solving task 01: intro/hello.rs
Elite Stack.
High-performance tools for engineers who demand the best.
LOCAL RUNTIME
Zero lag. Code runs native on your architecture.
AI COPILOT
Smart hints based on your exact implementation.
AUTO-CHECK
Instant verification of constraints and edge cases.
HOT RELOAD
Your test suite updates with every file save.
UNIVERSAL
Rust, Go, TS, Bun, Cloudflare. One engine for all.
CONTRIBUTE
Anyone can publish a course. Community owned.
Plans.
Transparent, perpetual, fair.
- Free Courses
- Public Library
- Local Core Engine
- Everything in Free
- One-time Payment
- Bring Your Own Key (AI)
- Community Discord
NOTE: AI Mentor features require your own API Key.
Prefer our cloud? Add the Master AI plan for just $8/mo later.
- Everything Premium
- Unlimited AI Energy
- Early Lab Access
- Cloud Sync