Katana is a next-generation crawling and spidering framework built in Go that combines standard and headless browsing modes for comprehensive web discovery.
The tool addresses the need for flexible, configurable web crawling by supporting both standard HTTP requests and headless browser automation with JavaScript parsing. It handles automatic form filling, applies scope control through preconfigured patterns and regex, and includes a machine learning-based knowledge base for page-type and form classification. The framework offers multiple input methods including URLs, lists, and stdin, with customizable output to stdout, files, or JSON format. It incorporates content deduplication through MD5 hashing and optional similarity filtering that normalizes HTML by stripping navigation elements, headers, footers, and scripts.
Katana suits security researchers, penetration testers, and developers performing reconnaissance or site discovery who need fine-grained control over crawling behavior. The tool is particularly valuable for scenarios requiring JavaScript execution or complex form interaction that standard crawlers cannot handle. Teams should adopt it when they need both speed and configurability without being locked into a single crawling mode.
The maintainers respond to issues and pull requests within a day. The issue tracker shows active work across enhancements and bug fixes, though some issues are marked as abandoned, indicating that not all reported problems receive resolution.
