Q-Stats - Get free marketing insights for every question on Quora.
Optimizely - A/B testing you'll actually use.
Seoxan - check seo report for any website, alexa ranking, server information, meta tags, authority, page speed and more
BEYABLE - Real-time personalization solutions for e-commerce & lead gen websites
HypeStat - HypeStat is free statistics and analytics service, where you can find information about every website.
Enhencer - Enhencer is an auto-machine learning SAAS platform that helps e-commerce sites to predict customer behaviours and take actions accordingly