Free Alternatives to PlantUML

Discover the best free alternatives to PlantUML. Find the full list of free tools like PlantUML. Compare features, explore options and get the free similar tools for your need.

SS Square Sketch No reviews (0) Square Sketch: Visualize design ideas with this professional tool featuring a unique square grid layout. Perfect for quick mockups and prototyping. M& M8! – Mind Map No reviews (0) M8! - Mind Map: Create visual maps for Windows. Organize ideas, notes & study effectively. Ideal for personal & business use. Download M8! today! T tldraw No reviews (0) Tldraw: Create interactive whiteboards & diagrams easily. Explore its collaborative editor, UI, and open-source libraries. Ideal for prototyping & visual collaboration. W Webjets No reviews (0) Webjets: Intuitive visual workspace for creatives. Organize ideas & projects with cards & boards. Free starting October 2025! WE Wondershare EdrawMax No reviews (0) Wondershare EdrawMax: Powerful diagramming software with extensive templates for flowcharts & org charts. AI simplifies creation, analysis & collaboration. Q QDia No reviews (0) QDia is a simple diagram editor for quickly creating diagrams with high-quality graphics. Perfect for quick schematics and visualizations. C Constella No reviews (0) Constella: Visual note-taking app that helps you capture, organize, and connect your ideas. Build knowledge with Constella's intuitive interface. OC Obsidian Canvas No reviews (0) Obsidian Canvas: Transform your canvas into a mind map! Smooth, responsive, & lag-free. Create cards effortlessly with this powerful plugin. K Kinopio No reviews (0) Discover Kinopio, a powerful visual thinking tool perfect for brainstorming, problem-solving, and collaboration. Use it for note-taking, planning, and diagrams. S Scrintal No reviews (0) Scrintal is a powerful tool combining mind maps & networked notes. Perfect for brainstorming, project planning, & research. Organize ideas with files, tags, & colors.