Keyword Discovery - Keyword Discovery is a keyword research and analysis tool.
SheerSEO - SheerSEO helps you to track Google Search Engine Rankings for critical keywords. PageRank, Back Links and more.
Keyword Country - Keyword Country is an AI-powered keyword research tool.
iSpionage - AdWords competitor keywords with the click of a button and monitor competitor PPC landing pages.
Keyword Tool Dominator - Keyword Tool Dominator is a keyword research tool to find long tail keywords.
WordZe - WordZe is a free keyword research tool enabling internet marketers to find keywords for their SEO campaigns.