# Seoffix > Seoffix is a high-performance web platform providing 375+ free SEO, developer, and webmaster tools alongside an audited directory of 3,814+ verified artificial intelligence applications. ## Core Services & Toolkits - [AI Tools Directory](https://seoffix.com/ai-tools): Curated catalog of 3,814+ verified artificial intelligence tools with in-depth technical benchmarks, pricing models, and feature matrices. - [AI Prompts Library](https://seoffix.com/ai-prompts): Curated repository of 100,000+ optimized prompts for ChatGPT, Midjourney, Claude, and developer workflows. - [CodeLearn Engine](https://seoffix.com/code-learn): Interactive browser-based code execution sandbox for Python, JavaScript, PHP, SQL, HTML, and CSS. - [Full SEO Site Auditor](https://seoffix.com/full-seo-site-auditor): 236-checkpoint technical site audit suite analyzing crawlability, indexability, Core Web Vitals, and AI search crawler compliance. - [AI Humanizer](https://seoffix.com/ai-humanizer): Text restructuring utility to polish AI-generated copy, bypass automated detection flags, and improve natural readability. - [Plagiarism Checker Pro](https://seoffix.com/plagiarism-checker): Deep-search lexical verification engine to prevent duplicate content penalties and ensure original copy. - [Word & Character Counter](https://seoffix.com/word-counter): Real-time lexical density, character counting, estimated reading time, and word frequency analysis. - [PDF Suite](https://seoffix.com/pdf-suite-tools): Offline and browser-based PDF compression, merging, conversion, and OCR text extraction. - [Domain & DNS Suite](https://seoffix.com/domain-tools): Real-time DNS propagation tracker, WHOIS lookup, SSL certificate inspector, and reverse IP analysis. ## Optional & Extended Resources - [Seoffix Documentation](https://seoffix.com/docs): Developer APIs and platform integration guides. - [Full LLM Manifest](https://seoffix.com/llms-full.txt): Complete indexing manifest for search agents and frontier LLMs.