Name:SimilarWeb (Paid)
URL:https://www.similarweb.com/
Description:All in one marketing toolkit for digital marketing professionals 
Utility:This tool – 

• Reveals the best strategies from the market and competitors
• Uncovers the best SEO and content strategies
• Helps build up and grow affiliate and media partnership
• Enhances display and paid search strategies 
• Helps understand the market, competitors and customers
• Analyzes trends, competitors strategies and audience behaviour 
• Finds, enriches and qualifies lead to increase sales opportunities 
• Helps monitor website traffic statistics to boost retention 
• Enables source, track and evaluate investment opportunities 
• Maps market and spots emerging players and market trends

Special Features:

• Free extension