The ultimate-web-scraper repository is a comprehensive PHP toolkit for web scraping and related web interaction tasks. It provides a robust HTTP client (WebBrowser) that handles cookies, redirects, SSL/TLS, and proxy support, enabling reliable web requests. For HTML processing, it includes the TagFilter library, which offers high-performance parsing with CSS3 selector support, streaming capabilities for large files, and built-in XSS prevention. The toolkit also features WebSocket client and server implementations, a simple HTTP server, and utilities for asynchronous operations, DNS over HTTPS, and data streaming. Designed as a modular library, it allows developers to extract and reuse components like the HTTP client, HTML parser, or async helper in other projects with minimal dependencies.