Businesses are adapting to a transformed online search landscape where users increasingly turn to platforms like ChatGPT, Perplexity, Gemini, and Claude, as well as AI-generated overviews, instead of clicking through algorithmically organized blue links. This shift has created a visibility problem for companies seeking to influence generative engines that run on trained large language models and retrieval systems. AI search optimization tools help companies investigate how they appear in AI search, tracking the prompts that surface their brand, the language AI uses to describe them, and the sources it draws from. Among the top tools, Webflow approaches generative discovery at the code level, giving LLMs a clean technical foundation with native schema markup and automated site structures. HubSpot offers a free, no-account AI Search Grader that scores brand presence, sentiment quality, positioning and competitive share of voice out of 100. ZipTie captures live browser-level snapshots of brand mentions across Google AI Overviews, ChatGPT and Perplexity, with an indexing health monitor connecting crawl errors to AI visibility gaps. Otterly.ai launched in 2024 as a lightweight, marketer-friendly entry point into AI search monitoring, popular among mid-market teams, agencies and SaaS companies for automating daily workflows. Semrush brought its long-standing SEO platform into the AI search era with its AI Visibility Toolkit, layering generative engine optimization data onto existing search intelligence.