Design
ui
Open-source components, blocks, and AI agents designed to speed up your workflow. Import them seamlessly into your favorite tools through Registry and MCPs.
★ 12.1k starsMIT
View guide →Open-source data modeling tool designed for PostgreSQL. No more typing DDL commands. Let pgModeler do the work for you!
pgmodeler is an open-source design project by nullptrlabs (nullptrlabs/pgmodeler on GitHub). It has 3,602 GitHub stars and 425 forks, is released under the GPL-3.0 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.
Production-ready UI kits with theming.
Version diagrams in git alongside your code.
Multiplayer cursors without the enterprise invoice.
The whole team joins free.
Community starters for every common artifact.
SVG, PNG, PDF, and framework code.
Download the source and move into the project folder.
git clone https://github.com/nullptrlabs/pgmodeler.git
cd pgmodelerEvery 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 nullptrlabs/pgmodeler with 425 forks. Check the repo's contributors and recent commits to see how active maintenance is.
GPL-3.0 — free to use, but derivative works must stay open.
For whiteboarding and diagrams, yes. Deep product design still favors Figma's ecosystem.
Export to code and specs that developers can actually use.
Most of these offer Docker images for private instances.
Open-source components, blocks, and AI agents designed to speed up your workflow. Import them seamlessly into your favorite tools through Registry and MCPs.
Eclipse SUMO is an open source, highly portable, microscopic and continuous traffic simulation package designed to handle large networks. It allows for inter…
:art: Diagram as Code for prototyping cloud system architectures
Chat with your data — natural-language BI with SQL generation
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
MCP agent toolkit that makes AI-written code more deterministic
The most-starred other Design projects in the LibreAI catalogue — the realistic shortlist if pgmodeler 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.