[porsager]

Lichobile[0] (lichess[1] mobile version) is also made with mithril.

There's also https://flems.io a snappy web playground with an open source embeddable core[2] ( shameless self promotion :P )

[0]: https://github.com/veloce/lichobile

[1]: http://lichess.org

[2]: https://github.com/porsager/flems