The 15 Best Diagrams & Whiteboards Tools & Websites in 2026

Looking for the best diagrams & whiteboards tools? We curate hundreds of tools on DesignBookmark, and these are the 15 best picks worth your time in 2026 — whether you're just starting out or leveling up your stack.

1. 
   1Miro

   The visual collaboration and online whiteboard platform.

   Visit Miro
2. 
   2Excalidraw

   A virtual hand-drawn-style whiteboard, open-source and free.

   Visit Excalidraw
3. 
   3Mural

   A digital workspace for visual collaboration and workshops.

   Visit Mural
4. 
   4FigJam

   Figma's online whiteboard for teams to ideate together.

   Visit FigJam
5. 
   5tldraw

   A tiny, infinite canvas whiteboard SDK and app.

   Visit tldraw
6. 
   6Whimsical

   Flowcharts, wireframes, mind maps and docs in one place.

   Visit Whimsical
7. 
   7Lucidchart

   Intelligent diagramming for flowcharts and architecture.

   Visit Lucidchart
8. 
   8draw.io

   Free, open-source diagramming for any kind of chart.

   Visit draw.io
9. 
   9Eraser

   The whiteboard for engineering teams — diagrams as code.

   Visit Eraser
10. 
    10Mermaid

    Create diagrams and charts from text and code.

    Visit Mermaid
11. 
    11Creately

    A visual workspace for diagrams, whiteboards and data.

    Visit Creately
12. 
    12Milanote

    Organize your creative projects on a flexible canvas.

    Visit Milanote
13. 
    13FlowMapp

    A visual UX planning tool for sitemaps and user flows.

    Visit FlowMapp
14. 
    14Octopus.do

    A visual sitemap builder that works in real time.

    Visit Octopus.do
15. 
    15Wiretext

    Create diagrams using Unicode box-drawing characters, share as text easily.

    Visit Wiretext