Sentius Corporation is a technology and intellectual property licensing company headquartered in McLean, Virginia.

Founded in 1993, Sentius has developed a number of breakthroughs in search and navigation technologies, and holds key patents for contextually linking data, which automates the delivery of point-of-interest content to end-users at the word, phrase, and metadata level for any Web application.

The technology was first developed to address the practical communication challenges encountered in reading foreign language e-mail in Japan – essentially an endless need to refer to multiple content sources to better understand the multi-lingual text. It evolved to efficiently link terms within a document with their pronunciations and definitions. Clicking on a term would launch a custom window in the context on the page being read. Sentius grew to serve emerging electronic publishing businesses, with consumer software applications for electronic books, technical documents, news and websites.

With the proliferation of the Internet, Sentius developed and patented RichLink to help corporations find a better way to reach and retain Web-based audiences. The company has distributed over one million copies of software, enriched millions of documents, produced award winning products, and partnered with major technology and media companies such as Apple, Sony, IBM/Lotus, Reuters Health, Dun & Bradstreet, Kenkyusha and others.