Generative Engine Optimization (GEO) is the practice of optimizing brand presence within AI-generated answers from systems like ChatGPT, Google AI Overviews, Gemini, and Perplexity. Ten GEO tools are reviewed and compared: SE Ranking (best full-stack integration), Writesonic and Frase (content creation), Goodie AI and GetCito (citation/mention tracking), AthenaHQ and Profound AI (enterprise intelligence), Rankscale AI (visibility scoring), Peec AI (simple monitoring), and Alli AI (automation). Key evaluation criteria include multi-model tracking, prompt-level granularity, citation intelligence, competitive benchmarking, and correlation with traditional SEO signals. SE Ranking is highlighted as the most comprehensive option for agencies and SEO teams.