Greprep

Competitor keyword research tool that reveals history and secret PPC/SEO strategies

Developer API for real-time keyword suggestions and difficulty metrics

Tool that aggregates People Also Ask data to understand user intent hierarchies

Keyword research tool that identifies low-competition keywords by analyzing SERP weaknesses and weak domains

Intuitive keyword research tool with high accuracy for keyword difficulty and volume

Browser extension that adds search volume and CPC data directly into Google search results