The 21 Best Diagramming & Whiteboards in 2026

Diagramming and floor-planning software with 4,500+ templates across 70+ diagram types.

Online whiteboard combining visual collaboration with built-in task management.

Free, security-first diagramming tool for flowcharts, wireframes, and technical diagrams.

Free desktop diagramming tool that auto-arranges flowcharts, UML, and network diagrams from data.

Diagramming tool for creating flowcharts and technical diagrams inside Confluence and Jira.

Real-time collaborative diagramming for flowcharts, wireframes, and org charts by the makers of Backlog.

Browser-based tool for wireframes, diagrams, and interactive prototypes.

The Omni Group's Mac and iPad tool for professional diagrams, wireframes, and vector design.

Infinite-canvas whiteboard with a hand‑drawn sketch feel

All-in-one open-source whiteboard tool

A virtual collaborative whiteboard for drawing and brainstorming

A modern text-to-diagram language for developers and technical writers

Generate diagrams and flowcharts from text

Data-first digital whiteboard that turns brainstorms into structured, exportable data.

Web-based diagramming and design platform

Visual collaboration on a digital whiteboard for distributed teams.

Collaborative online whiteboard for brainstorming and diagramming

Visual collaboration platform for flowcharts, org charts, and diagrams on an infinite canvas.

Generate diagrams from textual description

Online collaborative whiteboard for visual teamwork

Transform Text into Insight