I call it bbcode, but it's really a small subset of bbcode with some nilly-willy changes and expansions:

Fancy formatting

InputOutput
[b]bold[/b]bold<b>bold</b>
[code]code[/code]code<code class="prewrap wrap">code</code>
[lite]lite[/lite]lite<span class=lite>lite</span>
[~https://www.sandboxx.org/]https://www.sandboxx.org/<a class=wrap href="https://www.sandboxx.org/">https://www.sandboxx.org/</a>
[~https://www.sandboxx.org/ autonomy@sandboxx.org]autonomy@sandboxx.org<a class=wrap href="https://www.sandboxx.org/">autonomy@sandboxx.org</a>
[!~https://www.sandboxx.org/]https://www.sandboxx.org/<a class=wrap rel=nofollow href="https://www.sandboxx.org/">https://www.sandboxx.org/</a>
[!~https://www.sandboxx.org/ autonomy@sandboxx.org]autonomy@sandboxx.org<a class=wrap rel=nofollow href="https://www.sandboxx.org/">autonomy@sandboxx.org</a>

Video

InputOutput
[video]https://www.youtube.com/watch?v=9_NqFgYJWn8[/video]
(click image to load video)
<div class=video_placeholder onclick="this.innerHTML = '<iframe src=https://www.youtube-nocookie.com/embed/9_NqFgYJWn8 frameborder=0 allowfullscreen></iframe>'"><span class=video_placeholder_message>(click image to load video)</span><img src=http://img.youtube.com/vi/9_NqFgYJWn8/0.jpg height=380></div><div class="b nomargin"><div><a href="https://www.youtube.com/watch?v=9_NqFgYJWn8">https://www.youtube.com/watch?v=9_NqFgYJWn8</a></div></div>
[video]https://www.youtu.be/dOp6MdatyRc[/video]
(click image to load video)
<div class=video_placeholder onclick="this.innerHTML = '<iframe src=https://www.youtube-nocookie.com/embed/dOp6MdatyRc frameborder=0 allowfullscreen></iframe>'"><span class=video_placeholder_message>(click image to load video)</span><img src=http://img.youtube.com/vi/dOp6MdatyRc/0.jpg height=380></div><div class="b nomargin"><div><a href="https://www.youtube.com/watch?v=dOp6MdatyRc">https://www.youtube.com/watch?v=dOp6MdatyRc</a></div></div>
[video]https://vimeo.com/22439234[/video]
(click to load video)

https://vimeo.com/22439234
<div class=video_placeholder onclick="this.innerHTML = '<iframe src=http://player.vimeo.com/video/22439234?title=1&amp;byline=1 webkitAllowFullScreen mozallowfullscreen allowFullScreen></iframe>'"><span class=video_placeholder_message>(click to load video)</span></div><div class="b nomargin"><div class=pad><br><a href="https://vimeo.com/22439234">https://vimeo.com/22439234</a></div>