Recently I spent a lot of time with guys from 
He showed me his project on which he is working on right now, and I need to admit it blew my mind :)
If you are a developer, which from time to time needs to deal with Excel files, and you want to quickly and efficiently extract/edit/query a data inside a sheet, then you can use our all favorite well known SQL, to do the magic. Take a look on a video :)
Project website is https://www.querystorm.com/ and I think it is very interesting project. I decided to support it, by spreading the word about it ... and by donating all rewards from that post for further QueryStorm development :)