SiteIndex provides the ability to create an alphabetically-ordered index of site content similar in style to a typical book content index. This can be particularly useful for sites with large amounts of content that serves as reference material (organizational intranets, for example).
AlchemyAPI provides content owners and web developers with a rich suite of content analysis and meta-data annotation tools.
AlchemyAPI uses statistical natural language processing technology and machine learning algorithms to analyze your content, extracting semantic meta-data: information about people, places, companies, topics, languages, and more.
Expose the semantic richness hidden in any content using named entity extraction, phrase/term extraction, document categorization, language detection, structured content scraping, and more. Use AlchemyAPI to enhance your website, blog, content management system, or semantic web application.
Alchemy does several things, but this module currently concentrates on Alchemy's term extraction tools:
Keywords: This tool extracts keywords from node and page content, similar to the Yahoo! Term Extraction API but provides higher quality keywords that are more useful for SEO