The Semantria Ruby SDK by Lexalytics connects to the API to access sentiment analysis, keyword extraction, and word categorization. Semantic web services also include examples that allow users to interact with auto-response and discovery mode.
Google has dominated the search engine world for years, weathering the attempts of many competitors who have tried and failed to capture a piece of the search engine market. True Knowledge, a new natural language search service, is hoping to gain a piece of the search pie by harnessing the power of semantic data queries on the web.
In February, Morgan and Claypool Publishers released a 54-page unfinished work by Aaron Swartz on A Programmable Web. It begins with a focus on the architecture of the web, and moves on to "what it means to build a program on top of the web."