Best Free Alternatives to Diagrams.net in 2026

Visual planning workspace for creative projects, moodboards, research, briefs, and idea organization on flexible boards.

AI workspace for tasks, mind maps, notes, agents, automations, and business app-style collaborative workflows.

AI innovation workspace for whiteboarding, diagrams, docs, slides, tables, timelines, and collaborative planning across teams.

Kinopio is a spatial note-taking and visual thinking canvas for connecting ideas, research, moodboards, and plans.

Simple browser-based mind mapping tool for brainstorming, note organization, collaboration, and presenting ideas visually.

Collaborative mind mapping platform with AI mind maps, outline mode, presentation mode, and export options for planning and brainstorming.

Cloud diagramming platform for flowcharts, org charts, technical diagrams, process maps, and team collaboration with automation features.

Open-source collaborative whiteboard for sketching diagrams, wireframes, flowcharts, and notes in a clean hand-drawn style.

Fast visual workspace for flowcharts, wireframes, mind maps, boards, and AI-assisted technical planning.

Boardmix is an AI-powered online whiteboard for brainstorming, diagramming, planning, and team collaboration on an infinite canvas.

Simple collaborative mind map and flowchart tool for real-time idea mapping, process diagrams, and fast visual planning.

AI-powered mind mapping and flowchart tool for turning prompts, files, images, and notes into editable visual diagrams.