Draw.io Alternatives (2026): 10 Diagram Tools Compared

Draw.io, now often called diagrams.net, is free and flexible, which is why so many teams use it. But some people want diagrams that live with their code, faster sketching, or easier collaboration.

Here are ten draw.io alternatives in no particular order, sorted alphabetically, from text-to-diagram tools to collaborative editors. Each description comes from the tool's own website, re-checked today. If you're mapping customer needs rather than systems, my jobs to be done worksheet is a useful companion.

Decide what kind of diagram you draw most. Flowcharts, architecture diagrams and quick sketches suit different tools.

Then think about change. Diagrams that live as text files are easy to update alongside code and documentation.

Draw.io alternatives at a glance

In the free plan column, Yes means the tool's own site describes a free version, free plan or free download, Trial only means a time-limited trial, and No means neither is stated. Free options usually have limits, so check what's included first.

Tool	Type	Good for	Free plan
Cacoo	Online diagram tool	Team diagramming	Yes
Eraser	Diagrams and docs for engineers	Technical design docs	Yes
Excalidraw	Virtual whiteboard	Hand-drawn style sketches	Yes
Gleek	Text-to-diagram tool	Diagrams from typing	No
Gliffy	Diagram software	Diagrams in Confluence	Yes
Mermaid	Diagrams as code	Diagrams in Markdown	Yes
PlantUML	Diagrams as code	UML from text	Yes
Structurizr	Architecture diagrams	C4 model diagrams	Yes
tldraw	Collaborative whiteboard	Fast canvas sketching	Yes
yEd	Desktop graph editor	Automatic layouts	Yes

Ten draw.io alternatives to consider

Cacoo

Best for: Teams who want cloud diagrams with real-time collaboration and templates.

Eraser

Best for: Engineering teams who want diagrams and design documents together.

Excalidraw

Best for: Anyone who wants quick, hand-drawn style diagrams and sketches.

Gleek

Best for: People who prefer typing to dragging boxes, with diagrams built from text.

Gliffy

Best for: Teams who want flowcharts and diagrams inside Confluence and Jira.

Mermaid

Best for: Developers who want diagrams written as text inside Markdown and docs.

PlantUML

Best for: Developers who want UML and sequence diagrams generated from text.

Structurizr

Best for: Software architects who want C4 model diagrams kept as code.

tldraw

Best for: Teams who want a fast, simple canvas for drawing together.

yEd

Best for: People who want a free desktop editor that lays out complex diagrams automatically.

Where your draw.io files live

Here's a detail that matters for privacy. Draw.io's own documentation says it can store your diagram files on your local device, in your browser, or in cloud storage locations including Google Drive, OneDrive, GitHub and GitLab.

In other words, you choose where diagrams are saved. When you compare alternatives, check the same thing, because some tools store everything on their own servers. That's fine for many teams, but it matters if your diagrams show sensitive systems.

What to look for in a diagram tool

• Editing: drag and drop, text or both.
• Storage: where diagrams are saved.
• Collaboration: real-time editing and comments.
• Export: SVG, PNG and PDF for docs.
• Integrations: wikis, code repositories and docs.

How to keep diagrams up to date

1. Store each diagram next to what it describes.
2. Give every diagram an owner.
3. Add the date and version in a corner.
4. Review key diagrams when systems change.
5. Delete diagrams nobody uses.

Diagram mistakes to avoid

• Too much detail. Draw one level at a time.
• No owner. Diagrams go stale fast.
• Locked formats. Keep exports in open formats.
• Hidden files. Store diagrams where people look.

If your processes need tidying before you draw them, my guide to streamlining small business operations is a good first step.

Questions to ask before you pick a diagram tool

Diagrams outlive projects, so think about the long term as well as today.

• Where will the files be stored?
• Can people edit together at the same time?
• Can diagrams live next to code or docs?
• Which formats can I export?
• Will it still open my files in five years?

Pick the format first, then the tool. Open formats keep your diagrams safe.

Which kind of diagram tool fits your work

If you draw flowcharts for processes and training, a drag-and-drop editor with templates is the quickest route.

If you document software, text-based diagrams that live next to the code stay accurate because developers update them in the same place.

And if you're sketching ideas in a meeting, a quick whiteboard beats a precise editor every time.

Do you make diagram tools? Tool makers can ask to be considered for a featured place on this list.

My plain advice on draw.io alternatives

A diagram is only useful if it's current. Pick the tool that makes updating easiest for the people who'll do it.

And keep diagrams in open formats. You'll be glad of it the next time you switch tools.

If you're not sure where to start, rebuild one important diagram in two tools and share both with your team. The one they edit without being asked is the one to keep, because a diagram tool only works when people open it.

Frequently asked questions

What's diagrams.net?

It's another name for draw.io.

Where does draw.io save files?

Its documentation lists your device, browser, Google Drive, OneDrive, GitHub and GitLab.

What are diagrams as code?

Diagrams written as text that a tool turns into images.

Can I collaborate on diagrams live?

Many online tools support real-time editing.

Which tool is best for flowcharts?

Most diagram tools handle flowcharts well.

Can I put diagrams in Markdown?

Some text-based formats render inside Markdown.

What's the C4 model?

A way of drawing software architecture at four levels of detail.

Can I export diagrams as SVG?

Most tools export SVG and PNG.

Are hand-drawn diagrams professional?

They're great for early ideas and workshops.

Do I need a desktop app?

Not usually. Most tools run in a browser.

Can I draw network diagrams?

Yes. Several tools include shapes for networks and cloud architecture.

Can I add diagrams to documentation?

Many tools export images or embed into wikis and docs.

Can I import draw.io files elsewhere?

Some tools import them, but check before you rely on it.

Can I draw org charts?

Yes. Most diagram tools include org chart shapes or templates.

Can I use diagrams in presentations?

Export as an image or SVG and drop them into slides.

Do text-based diagrams need coding skills?

Only a little. The syntax is short and easy to learn.

Can I share a read-only diagram?

Most tools let you share view-only links.

Can diagrams update automatically?

Text-based diagrams update as soon as you edit the text.