Sam Laber is the Director of Marketing at Datanyze.At Datanyze, we collect and organize information pertaining to the tech stacks of over 45 million websites and mobile apps. We know things like:1. How many companies are using Marketo vs HubSpot vs Pardot. 2. Which mobile gaming apps use Crashlytics. 3. How many companies in Europe started using an e-commerce platform this week.To collect this information, we look for what we like to call “technology signatures”. These can come in the form of code snippets, JavaScript pixels or any other publicly available data that can be gleaned from scanning a site or app. Here are a few common signatures you might recognize.We thought it would be interesting to look under the hood of 638 YC companies to see which technologies are most prevalent.Interesting Bits: