[angerman]

While not directly monad related. There's also instaparse (https://github.com/engelberg/instaparse) which has also pretty nice presentation. https://www.youtube.com/watch?v=b2AUW6psVcE

I just wanted to leave this here as if it hadn't been for twitter and the presentation, I would likely never have known about it.

[mrottenkolber]

Also, nobody cares. Since this comment is not even remotely related anymore.