SERPWoo is a US rank tracking tool founded in 2014, monitoring 130 million+ domains and 1.5 million+ keywords daily, with top-100 SERP views, white-label reports and online reputation management.
SEO Review Tools is a free SEO tool platform founded in 2013 and headquartered in the Netherlands, offering 82 real-time SEO and AI tools with over 180,000 members and an average rating of 9.3/10.
Screaming Frog is a UK-based technical SEO desktop tool brand; its SEO Spider crawls 500 URLs free and $279/year paid, and together with Log File Analyser and an API it covers auditing, log analysis and automation.
Nightwatch is an SEO rank tracking tool headquartered in the Netherlands, offering daily multi-engine keyword ranking monitoring, white-label reports, and API integration for SEO agencies and teams that value data freshness.