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Design Tools
UI/UX, prototyping, whiteboard, and diagramming tools
Trending in Design Tools
Excalidraw
Excalidraw is an open-source virtual whiteboard for sketching architecture diagrams and wireframes with an open JSON format and real-time collaboration.
135.1k+1.6kWebLinuxmacOStoday
MITPrototyping & Wireframing
Penpot
Penpot is an open-source UI/UX design and prototyping tool that replaces Figma with web standards, native CSS Grid layouts, and self-hosted control.
62.0k+1.3kLinuxmacOS
OpenPencil
OpenPencil is an open-source Figma alternative that opens .fig files locally, offering vector canvas editing and built-in AI without subscriptions.
9.6k+835LinuxmacOS
Draw.io
Draw.io is an open-source diagramming tool that replaces Lucidchart and Visio with a free, client-side editor that saves directly to your own storage.
9.1k+583LinuxmacOS
27 tools found
Excalidraw
Excalidraw is an open-source virtual whiteboard for sketching architecture diagrams and wireframes with an open JSON format and real-time collaboration.
135.1kWebLinuxmacOStoday
MITPrototyping & Wireframing
Penpot
Penpot is an open-source UI/UX design and prototyping tool that replaces Figma with web standards, native CSS Grid layouts, and self-hosted control.
62.0kLinuxmacOSWindowstoday
MPL-2.0UI/UX Design
tldraw
tldraw is an open-source infinite canvas SDK and self-hosted whiteboard that replaces proprietary wireframing tools with full DOM and data control.
51.2kWebtoday
Apache-2.0Prototyping & Wireframing
Diagrams as Code
Diagrams as Code replaces manual Lucidchart drafting with Python scripts that render version-controlled cloud architecture diagrams directly in git repos.
42.8kLinuxmacOSWindows1d ago
MITDiagramming & Flowcharts
Graphite
Graphite is a browser-based vector editor and procedural design tool that replaces Adobe Illustrator with non-destructive, local-first 2D workflows.
27.8kWebtoday
Apache-2.0UI/UX Design
PlantUML
PlantUML replaces visual tools like Lucidchart with diagrams as code, compiling version-controlled technical schematics inside developer pipelines.
13.4kLinuxmacOSWindowstoday
LGPL-3.0Diagramming & Flowcharts
ES
PromotedEdgar Sipki
Go & gRPC engineer · founder of EasyP
Mentoring for backend developers. Consulting for startups.
Go, gRPC and Protobuf done right, LLM agents in production, and the hard parts of shipping a first product.
GogRPCProtobufLLM agents
sipki.online
Pencil Project
Pencil Project is an open-source desktop wireframing tool that replaces paid UI suites with offline, stencil-based GUI prototyping for everyone.
9.9kLinuxmacOSWindows7d ago
GPL-2.0UI/UX Design
BPMN.io
BPMN.io provides an embeddable JavaScript toolkit to view and edit executable BPMN 2.0 process workflows in web apps, replacing proprietary diagram tools.
9.7kWeb4d ago
MITDiagramming & Flowcharts
OpenPencil
OpenPencil is an open-source Figma alternative that opens .fig files locally, offering vector canvas editing and built-in AI without subscriptions.
9.6kLinuxmacOSWindowstoday
MITPrototyping & Wireframing
Draw.io
Draw.io is an open-source diagramming tool that replaces Lucidchart and Visio with a free, client-side editor that saves directly to your own storage.
9.1kLinuxmacOSWindows4d ago
Apache-2.0Diagramming & Flowcharts
Akira
Akira is an open-source native Linux UI design tool replacing Sketch for basic offline wireframes and vector mockups without cloud subscriptions.
5.3kLinux10mo ago
GPL-3.0UI/UX Design
FigmaToCode
FigmaToCode converts Figma designs into clean HTML, Tailwind, Flutter, and SwiftUI without recurring per-seat handoff fees or external cloud dependencies.
5.3kWeb3mo ago
GPL-3.0UI/UX Design
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