Drag, connect, inspect.
Create nodes from a production-oriented catalog, link exact handles, and tune edge semantics.
Realtime architecture canvas
Design production systems. Practice how they hold up.
Design distributed systems, analyze architectural decisions with AI, and simulate performance, scalability, and trade-offs using an interactive canvas.
Trying it without an account? You agree to the terms for visitors without an account.
1000+Catalog components
245+AI-graded exercises
RealtimeMultiplayer editing
PNG · JSONImport & export
Built for systems.
Frontend, backend, data, async, infrastructure, and external service components are ready on day one.
Share when ready.
Invite reviewers through role links after the first design is worth discussing.
Free first.
Own three Grids with free Shapes and PNG export. Pro tools stay visible with upgrade guidance.
Practice system design.
Work through 245+ design exercises with AI grading and coaching hints, then track your scores. The exercises are free and unlimited; AI grading and hints spend credits, and Pro includes a monthly challenge allowance.
Component catalog
One catalog, every layer of the stack.
1000+ components across architecture and design patterns — from load balancers and message queues to CQRS roles and AI orchestration. Each knows what it is, so your diagram does too.
Architecture
Clients & UIServices & APIsData StoresMessaging & WorkflowsAI & MLNetwork & EdgeSecurity & IdentityPlatform & RuntimeObservability & OpsExternal Integrations
Design patterns
DDD StrategicCQRS & EventsEnterprise IntegrationResilience & DeliveryDistributed SystemsAI Agent Orchestration
Software design module · Planned
Design the application itself, not only the infrastructure it runs on, and turn that design into a written specification you can build from.
Proof of practice
Every exercise adds to a practice record you can share.
AI-graded exercises across system design, patterns, and flow, a public leaderboard, and a shareable record of practice anyone can open without logging in.
quiet-falcon-2931
1240 Points
42 Completed
58Evaluations
87Avg score
No account needed
Open a Grid and start drawing.
The editor is one click away: sketch a system and invite a reviewer with no account. Graded exercises need a free account — and the free tier is real.