![](https://cdn.prod.website-files.com/5ceda27bc61ed23757d6d8d9/5cf05d43ac91721989164f3c_58d20d768a6d91594b2b7ff2_logo-mattermark.png)
![](https://cdn.prod.website-files.com/5ceda27bc61ed23757d6d8d9/5cf063171440ce6a9bf4b093_58d20dd06dd138d21600fa66_yc-winter-2017-demo-day.jpeg)
The Top 25 Y Combinator Winter 2017 Demo Day Startups
![](https://cdn.prod.website-files.com/5ca95f7a3be192f65a7b4e4f/5cedc23c51a2b2513758e9de_divider.svg)
"Today and tomorrow, Y Combinator’s Demo Day for the Winter 2017 batch is taking place at the Computer History Museum in Mountain View, California ... This batch of companies includes products and services ranging from a professional photographer booking system, “Goodreads for the Snapchat generation”, “Thumbtack for Korea”, a new-age supermarket, and conversation analytics for sales teams to an app for analyzing acne, portable box houses, a Fitbit for Dairy cows, and more ... #1. Snappr offers affordable, on-demand professional photography services."