Popcornmetrics - Track user behavior without coding
Wappalyzer - Wappalyzer is a technology profilers and leads data provider. Create lists of websites and contacts that use certain technologies.
Similar Tech - SimilarTech offers a Sales Insights platform which helps companies uncover their ideal market by crawling the sourcecode of over 300M sites.
BuiltWith Toolbar - Reveals the tech underneath a website. Browser extension.
Software Development Trends 2018 - Trends and data from 9 tech firms
Growthverse - An interactive visualization of marketing tech tools