diff --git a/README.md b/README.md
index f5c1a8da..42664cfa 100644
--- a/README.md
+++ b/README.md
@@ -417,6 +417,7 @@ There're also some great commercial libraries, like [amchart](https://www.amchar
 * [documentation.js](http://documentation.js.org) - API documentation generator with support for ES2015+ and flow annotation.
 * [jsduck](https://github.com/senchalabs/jsduck) - API documentation generator made for Sencha JavaScript frameworks, but can be used for other frameworks too.
 * [codecrumbs](https://github.com/Bogdan-Lyashenko/codecrumbs) is a visual tool for learning and documenting a codebase by putting breadcrumbs in source code.
+* [OpenAPIDesigner](https://github.com/xcancloud/OpenAPIDesigner) is an open-source OpenAPI specification design tool that allows developers to design, write, and validate OpenAPI specifications.
 
 ## Files
 *Libraries for working with files.*