Draw.io
Draw.io is an amazing diagramming tool. It's free, easy to use and has all the features you need built in.
Last reviewed September 6, 2026
Pros
- ✓Completely free
- ✓No learning curve
- ✓Large library of built in diagrams
- ✓Integrates with Google Workspace & Notion
Cons
- ✕Can feel more functional than polished
- ✕Not great for brainstorming
- ✕Interface is simple, but can feel basic compared to other tools
- ✕AI Tool seems glitchy
Draw.io is an amazing diagramming tool. They claim to be "the world's most widely used browser-based end-user diagramming software." It's free, easy to use and has a massive set of diagram logos/images included. It's an intuitive site with almost zero learning curve or onboarding costs.
They also give you an AI integration (for free, too) where you describe your diagram and let OpenAI design it for you in Draw.io. What's supposed to happen is you generate it and you have a diagram to edit as you please, but it's a buggy feature.
If you're looking for a true digital whiteboard, this isn't that. It's purpose built for diagramming, but it could be used in place of a digital whiteboard with a little bit of creativity.
Draw.io natively integrates with many tools, including Notion, Google Workspace, Sharepoint and OneDrive, Atlassian, Git, and Dropbox.
This isn't just a web-app, you can download the program to your computer for free, too.
Here's their Platform Demo video: