GraphComment

A good alternative for a comment system is GraphComment. Their free tier account is quite useable.

It’s not as cluttered as Disqus.

/layouts/shortcodes/graphcomment.html

    <div id="graphcomment"></div>
    <script type="text/javascript">

    /* - - - CONFIGURATION VARIABLES - - - */

    var __semio__params = {
        graphcommentId: "YOUR-GRAPHCOMMENT-PAGE-ID-HERE", // make sure the id is yours

        behaviour: {
        // HIGHLY RECOMMENDED
        //  uid: "...", // uniq identifer for the comments thread on your page (ex: your page id)
        },

        // configure your variables here

    }

    /* - - - DON'T EDIT BELOW THIS LINE - - - */

    function __semio__onload() {
        __semio__gc_graphlogin(__semio__params)
    }


    (function() {
        var gc = document.createElement('script'); gc.type = 'text/javascript'; gc.async = true;
        gc.onload = __semio__onload; gc.defer = true; gc.src = 'https://integration.graphcomment.com/gc_graphlogin.js?' + Date.now();
        (document.getElementsByTagName('head')[0] || document.getElementsByTagName('body')[0]).appendChild(gc);
    })();
    </script>

On your *.md page put this one line of code where you want the comment box to appear:

{{< graphcomment >}}