jointjs/docs/src/joint/api/shapes/standard/intro.html

JavaScript diagramming library

<p>The Standard plugin provides you with ready-to-use, high-performance versions of the most common shapes. The shapes can be used as they are or can serve as an inspiration for creating custom shapes.</p>

<iframe src="about:blank" data-src="./demo/shapes/shapes.standard.html" style="height: 805px; width: 660px;"></iframe>

<p><a target="_blank" href="./demo/shapes/shapes.standard.js">source code</a></p>