privacytools.io/_includes/sections/key-manager.html

<h1 id="key-manager" class="anchor"><a href="#key-manager"><i class="fas fa-link anchor-icon"></i></a> Key Managers</h1>
<div class="row mb-2">

     {% include card.html color="success"
    title="NitroKey"
    labels="warning:warning (<a href='https://github.com/Nitrokey/nitrokey-pro-firmware/issues/48'>more info</a>): Hardware may still contain some non-free components."
    image="/assets/img/tools/nitrokey.png"
    url="https://www.nitrokey.com/"
    description="USB key management devices focusing on security.."
    %}

 </div>

  <h3>Worth Mentioning</h3>

 <ul>
    <li><a href="http://osresearch.net/">Heads firmware project</a> - Heads is a project aiming to provide slighly better physical security on a system. It is compatible with some USB key managers.</li>
</ul>