Ace your next
system design interview
Master the system design interview. Diagram architectures using pre-built components, track requirements as you complete them, and get feedback from the community.
Free to start • No credit card required
Community Favorites
Discover popular system design diagrams from the community
Everything You Need to Ace System Design Interviews
Purpose-built for system design practice — not just another diagramming tool.
AI Mentor
Get real-time feedback as you design. Your AI mentor reviews your architecture, spots missing components, and coaches you through trade-offs — like having a senior engineer on call.
Practice Challenges
Stop wondering what to practice. Pick from curated system design questions — each with requirements, difficulty level, and estimated time — and start designing immediately.
System Components
Databases, load balancers, caches, queues, and every component you need — one click away. Spend time designing, not hunting for shapes.
Requirements Tracker
Interviewers score you on coverage. Keep functional and non-functional requirements front and center while you design — so you never lose points for missing something obvious.
Community Gallery
See how other engineers solved the same questions you're practicing. Browse real architectures and learn from different approaches to the same problems.
The System Pipeline
From blank canvas to interview-ready in minutes. Flow through the process like data through a system.
Pick a Design Question
Start from a blank canvas or browse community solutions for inspiration.
Design Your Architecture
Drag pre-built databases, load balancers, queues, and services onto your canvas. Track requirements as you go.
Share & Get Feedback
Share with the community for feedback, export for your interview prep notes, or publish to help others learn.
Pick a Design Question
Start from a blank canvas or browse community solutions for inspiration.
Design Your Architecture
Drag pre-built databases, load balancers, queues, and services onto your canvas. Track requirements as you go.
Share & Get Feedback
Share with the community for feedback, export for your interview prep notes, or publish to help others learn.
Why Supaboard Over a General Diagramming Tool?
Tools like Excalidraw and Miro are great for general sketching. Supaboard is purpose-built for system design interview practice.
Pre-built system design components (databases, load balancers, caches, queues)
Requirements tracker that mirrors real interview scoring
Community gallery of real architecture diagrams to learn from
Designed around the system design interview workflow
Frequently Asked Questions
Everything you need to know about Supaboard.
Is Supaboard free?
Yes! Supaboard has a free plan that includes 1 board and access to the community gallery. You can upgrade to Pro for $12/month to get unlimited boards, export options, real-time collaboration, and more.
How is Supaboard different from Excalidraw or draw.io?
Excalidraw and draw.io are general-purpose diagramming tools. Supaboard is purpose-built for system design interviews — with pre-built system components (databases, load balancers, caches, queues), a floating requirements tracker that mirrors how interviewers score candidates, and a community gallery of real architecture diagrams to learn from.
Can I use Supaboard to prepare for FAANG/MAANG interviews?
Absolutely. Supaboard is designed around the system design interview format used at companies like Google, Amazon, Meta, and other top tech firms. The requirements tracker, system component library, and community gallery of real-world architectures give you hands-on practice with the same workflow used in actual interviews.
What system design components are available?
Supaboard includes pre-built shapes for databases, servers, load balancers, caches, message queues, CDNs, and more. Each component is designed to match the notation commonly used in system design interviews and architectural documentation.
Can I collaborate with teammates or study partners?
Yes! With a Pro plan, you can invite collaborators to view or edit your boards in real-time. This is great for study groups, mock interviews with friends, or getting feedback from mentors.
Your next interview is closer than you think
Start practicing today, no credit card, ready in 60 seconds. Free forever for 1 board. Pro from $12/month for unlimited boards.
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