MetaSurvey - MetaSurvey provides light and high engagement surveys for e-commerce.
BuiltWith Toolbar - Reveals the tech underneath a website. Browser extension.
OpenStartup.dev - A collection of open startups
Typeform + NomNom Integration - Turn Typeform responses into product insights
Airim - Show personalised FAQs before live chat
Similar Tech - SimilarTech offers a Sales Insights platform which helps companies uncover their ideal market by crawling the sourcecode of over 300M sites.