Lunacy — free diagram tool with powerful features
Discover one of the most user-friendly diagram tools designed to make collaboration easy for you and your team.
Discover one of the most user-friendly diagram tools designed to make collaboration easy for you and your team.
Download Lunacy for free and open the program. Create a new project and customize your canvas size for your diagram. Ensure the left toolbars, top menu, and layers panel are visible to easily access all the tools and assets you need for your diagram.
On the left toolbar, go to the shapes menu to select basic shapes like circles, rectangles, or polygons for your diagram blocks. Then use the lines and arrows to connect your shapes and create flowcharts for processes. Add labels or descriptions to shapes and lines using the text tool for clarity.
When your diagram is ready, you can export it. Choose the format you prefer, such as PNG or SVG. Save it and share wherever needed. Before that, you can also share your design with your team for feedback using our free diagram tool’s collaboration features. Team members can review and suggest changes in real-time.
Our comprehensive collection has everything you need—icons, illustrations, and fonts, all to elevate your diagrams right within our app. With our assets, you can effortlessly make diagrams, including flowcharts, mind maps, workflow diagrams, organizational charts, architecture diagrams, process diagrams, network diagrams, and many more.
Our free diagramming tool is powered by advanced AI features to help you work faster. While it’s not solely focused on diagramming, its smart tools—like the image upscaler, a background remover, a placeholder text, and a user avatar generator are perfect for enhancing your diagrams. These features assist you in creating designs that truly stand out, making your projects look professional.
Our ultimate diagram tool makes teamwork easy and fun! Collaborate in real-time, send text and audio messages to stay connected, and use creative stickers to create a diagram that’s clear and engaging. Whether working with your team or brainstorming alone, Lunacy has everything you need to bring your ideas to life.
Enjoy the freedom to work with full functionality, online or offline—whenever you need our diagram software and wherever you are.
Our free diagram tool is available on Windows, Mac, and Linux, offering a seamless design experience across all major operating systems.
Lunacy is one of the few free diagramming tools that can open .sketch files directly and import projects from Figma.
Frequently asked questions
What our users say
Lunacy has made it so much easier for my team and I to collaborate on projects. The real-time collaboration feature is smooth, and it integrates perfectly with our existing workflows.
Lunacy is an amazingly designed program that has been improving really fast. All I can say is, "Thank you, Lunacy team". I can actually trust it whenever I can't ensure an internet connection.
LUNACY
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