If you guys want to try out TextTeaser, you can check out the website (http://www.textteaser.com/). Or try the API via Mashape (https://www.mashape.com/mojojolo/textteaser).
If it is, I'm not using it. :)
I am also curious about how the NLP/ML parts are implemented, as it's claimed by the README on github. Briefly scanned the code but didn't really spot it.