The logo of the open source authoring tool <a href="https://en.wikipedia.org/wiki/H5P" class="extiw" title="en:H5P">H5P</a>.
Joubel
GPL
<a rel="nofollow" class="external free" href="https://h5p.org/logo">https://h5p.org/logo</a> "For web", vectorised with Inkscape