[10][11][12][4][13][14] JGraph Ltd is a private limited company founded by Gaudenz Alder and David Benson in 2000 in the United Kingdom.

[18] In 2005, development began on mxGraph, which is a graph drawing software library written in JavaScript using HTML5 and SVG technologies.

[24] In 2011, the company started publishing its hosted service for the mxGraph web application under a separate brand, Diagramly with the domain "diagram.ly".

[12] After removing the remaining use of Java applets from its web app, the service rebranded as draw.io in 2012 because the ".io suffix is a lot cooler than .ly", said co-founder David Benson in a 2012 interview.

[25][26][19] In February 2020, the company announced on its blog that the hosted version of the web application would move from "draw.io" to the "diagrams.net" domain, citing security reasons.