draw.io vs Mermaid

Mermaid significantly outpaces draw.io in community adoption with 90,839 stars compared to 8,964 stars on GitHub. This 10.1x difference suggests Mermaid has a much larger and more active community. In terms of developer contributions, Mermaid has 9,392 forks, indicating strong developer engagement.

draw.io is growing faster, adding 635 stars in the last 30 days (+7.6%) against adding 424 stars for Mermaid (+0.5%). draw.io is the smaller project of the two, so it is closing the gap rather than extending a lead.

Both projects show recent activity, with draw.io last updated 1 day ago and Mermaid 3 hours ago.

Both tools share common technology foundations, being built with JavaScript, CSS. However, they differ in their additional technology choices: draw.io uses Bash, Java while Mermaid leverages Typescript, Vue.

Mermaid has been in development longer, starting 12 years ago, compared to draw.io which began 10 years ago. This 1.9-year head start suggests Mermaid may have more mature features and established processes.

Mermaid uses the MIT license, which is more permissive than draw.io's Apache-2.0 license, potentially offering greater flexibility for commercial use and integration.

Both tools serve similar use cases in Data Visualization. However, they also have distinct specializations: draw.io also focuses on Design & Prototyping.

draw.io provides self-hosting options for complete data control and customization, while Mermaid may be primarily cloud-based or require different deployment approaches.