Whiteboard and Diagram Tools Worth Opening: Excalidraw, tldraw, draw.io, Whimsical, FigJam and Miro

Most diagrams have a short life. You draw the boxes, you paste the picture into a document or a pull request, someone says "ah, right", and nobody ever opens the source again. A smaller number are the opposite: the architecture diagram, the schema, the network map, edited every quarter for years. And a third kind is not really a diagram at all but a room — a board that a group of people move things around on together.

Those are three different jobs, and the reason people end up paying for a whiteboard they use twice a year is that they chose one tool for all three. We open six between us. Here is which one for which job, and what each actually costs.

Sketches: Excalidraw and tldraw

For the first kind of diagram — drawn once, pasted, forgotten — the right tool is free and needs no account, because any friction at all means you describe the thing in words instead and the reader loses the picture.

Excalidraw is our default. Open excalidraw.com, draw boxes and arrows, export SVG or PNG, done. The hand-drawn style is a feature: a wobbly diagram reads as a sketch, and people respond to it with "what about this case" rather than "that box is not aligned". The free version at excalidraw.com is the full editor with one scene, unlimited collaborators on a shared link, and export. Excalidraw+ at $6 a user a month, with 14% off billed annually and a 14-day trial, adds cloud-saved scenes and folders, teams, comments, presentations and read-only links — worth it only if you want the sketches to live somewhere rather than in the documents they were pasted into.

tldraw is the same idea with neater handwriting. It is a free infinite canvas in the browser, cleaner-looking than Excalidraw, and it exists mainly as an SDK for people building a canvas into their own product. If the sketch is going in front of a client and the wobble feels wrong, this is the one.

A diagram that takes thirty seconds to start gets drawn. One that needs a login and a workspace gets described in a paragraph instead, and the paragraph is worse.

Systems: draw.io

The second kind of diagram needs precision, connectors that stay attached when you move a box, shape libraries for AWS and network gear and UML, and above all a file you will still be able to open in ten years. That is draw.io, which has been doing exactly this since 2005.

It is free, open source under Apache 2.0, and has no sign-up. The diagram is an XML file you save to Google Drive, OneDrive, GitHub, Confluence or your own disk, and there is a desktop app if you would rather not use the browser at all. The company earns from its Confluence and Jira apps sold to enterprises, which is why the standalone editor can stay free; there is no enterprise tier with single sign-on because there is nothing to sign in to. The interface is plainer than everything else here and it is the tool we trust with the diagram that matters. If the diagram is a database schema, we said more about the tooling around that in the Postgres tools we reach for.

Rooms: FigJam, Miro and Whimsical

The third job is a group working on one board at the same time — a retrospective, a workshop, a planning session with sticky notes. This is where you pay, and the free tiers are designed to make you.

Miro is the most complete whiteboard, with templates for every ceremony a team runs, integrations into Jira and Asana, and AI features metered in credits. Its free plan allows three editable boards, which a small team uses up in a week; Starter is $8 a member a month billed yearly for unlimited private boards, and Business is $20 with guest access and unlimited workspaces. It is the safe corporate choice and it is priced like one.

FigJam is the cheapest way into a proper shared whiteboard, provided someone in the company already pays for Figma. It comes with the Collab seat — $3 a month on Figma Professional, $5 on the org-level and Enterprise plans — which also covers Figma Slides and viewing design files. On Figma's free Starter plan it is included with basic features. For a product team where the designers are on Figma anyway, it is the obvious board, and the whole team can be on it for less than one Miro seat each. If you are choosing the design tool itself, our Figma alternatives piece is where that decision lives.

Whimsical is the nicest of the three for flowcharts and wireframes specifically: the shapes snap, the connectors behave, and the result looks finished without effort. The free tier is measured in objects — 50 board objects and 50 doc blocks a month, with a watermark on exports — which one real flowchart consumes. Pro is $10 an editor a month billed annually and removes all of that; Business is $20 with private teams and SSO. Viewers and guests are free on every plan, which matters for a board that many people read and few edit.

Side by side

	Best for	Free tier	Paid	Files live
Excalidraw	Sketches	Full editor, one scene	Plus $6/user/month	Browser, or Plus cloud
tldraw	Cleaner sketches, embedding	Full canvas	SDK licensing	Browser
draw.io	System diagrams	Everything	None	Your Drive, GitHub or disk
Whimsical	Flowcharts, wireframes	50 objects a month, watermark	Pro $10/editor/month yearly	Whimsical
FigJam	Product team workshops	Starter plan, basic	Collab seat $3–5/month	Figma
Miro	Company-wide whiteboarding	3 editable boards	Starter $8/member/month yearly	Miro

What we actually do

Excalidraw for anything going into a document, which is nine diagrams in ten. draw.io for the three or four diagrams that have to stay correct, saved in the repository next to the code they describe so they get reviewed with it. FigJam for workshops, because the designers were on Figma already and the seats cost almost nothing. We let a Miro subscription lapse two years ago and have not missed it; we let a Whimsical one lapse and occasionally do, because nothing else makes a flowchart look that tidy that fast.

The principle underneath: match the tool to how long the diagram will live. A free canvas for the ones that die in a day, a file you own for the ones that last years, and a paid board only for the hour when everyone is in the room. Buying the room for all three is how a company ends up with twelve Miro seats and one board.