Design
whiteboard
open-source canvas for thoughtful software design
★ 2.7k starsMIT
View guide →Eclipse SUMO is an open source, highly portable, microscopic and continuous traffic simulation package designed to handle large networks. It allows for inter…
sumo is an open-source design project by eclipse-sumo (eclipse-sumo/sumo on GitHub). It has 4,197 GitHub stars and 1,760 forks, is released under the EPL-2.0 license, and was last updated on GitHub on 2 October 2026.
Whiteboard, diagrams-as-code, or component library — match the artifact.
Community templates and themes skip the blank page.
Real-time editing and version history included.
SVG/PNG/code output drops into products and docs.
SVG, PNG, PDF, and framework code.
Run the whole studio on your own server.
Brainstorm without page boundaries.
Production-ready UI kits with theming.
Version diagrams in git alongside your code.
Multiplayer cursors without the enterprise invoice.
Download the source and move into the project folder.
git clone https://github.com/eclipse-sumo/sumo.git
cd sumoEvery project documents its own setup; start with install requirements.
cat README.md | head -60Follow the project's launch command — Docker, pip, npm, or a binary release.
# see README for the exact launch commandIt is an open-source project at eclipse-sumo/sumo with 1,760 forks. Check the repo's contributors and recent commits to see how active maintenance is.
Licensed under EPL-2.0 — check the repo for commercial-use terms.
Yes — CRDT-based editing is the standard approach now.
For whiteboarding and diagrams, yes. Deep product design still favors Figma's ecosystem.
Export to code and specs that developers can actually use.
open-source canvas for thoughtful software design
Open-source components, blocks, and AI agents designed to speed up your workflow. Import them seamlessly into your favorite tools through Registry and MCPs.
Open-source data modeling tool designed for PostgreSQL. No more typing DDL commands. Let pgModeler do the work for you!
Beautifully designed, ultra-fast cross-platform file transfer
Rallly is an open-source scheduling and collaboration tool designed to make organizing events and meetings easier.
Checkmate is an open-source, self-hosted tool designed to track and monitor server hardware, uptime, response times, and incidents in real-time with beautifu…
The most-starred other Design projects in the LibreAI catalogue — the realistic shortlist if sumo is not the right fit.
Excalidraw — the virtual whiteboard with the hand-drawn look: infinite canvas, real-time collaboration and end-to-end encrypted sharing, MIT-licensed
Drop in a screenshot and convert it to clean code (HTML/Tailwind/React/Vue)
Turn any idea, plan or codebase into a beautiful interactive architecture diagram — an agent skill
There can be more than Notion and Miro. AFFiNE(pronounced [ə‘fain]) is a next-gen knowledge base that brings planning, sorting and creating all together. Pri…
draw.io Desktop — the official offline desktop app for diagrams.net: flowcharts, architecture diagrams and wireframes in an Electron app that never sends your diagram data anywhere, GPL-3.0
Free and open — grab the source, star the repo, and start creating.