Cora SEO Software is an expert-level SEO diagnostics tool measuring up to 2040 ranking factors and identifying strongest ones, telling users exactly how much of each factor their page needs.

Cora SEO by SEOToolLab is desktop software designed for PCs and Macs, unlike cloud-based competitors requiring software download. Notable features include automatic adaptation to Google updates, Cora Trends identifying strongest factors common to keyword groups for defining SEO policies, and Cora Correlate Anything visually correlating factor measurements with rank positions to avoid wasting time on non-correlating factors. Cora Lite is the newer offering as a cheaper, more user-friendly alternative measuring up to 556 factors. The tool is particularly suited for seasoned SEO professionals comfortable with technical terminology valuing data-driven analysis.
Semrush's AI-powered content generation and optimization tool
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ContentShake (now called Content Toolkit within Semrush) is an AI writing solution that generates SEO-boosted articles. It combines content ideas, keyword suggestions, and competitor insights with article generation and optimization features.
SEO Spider Website Crawler
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Professional website crawler and SEO audit tool trusted by thousands of SEOs, agencies and brands worldwide. Identifies over 300 SEO issues, warnings and opportunities to improve website health.
Free Chrome extension for basic keyword research without premium subscription
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Keyword Surfer is a free Chrome extension providing basic keyword research capabilities without requiring a paid subscription. It's part of Surfer SEO's product ecosystem.