ruphus13 and other readers alerted us to Yahoo's BOSS, Build your Own Search Service
. It gives access to Yahoo's entire databases for Web, image, and news search with no cap on queries per day and no restrictions on mixing Yahoo's search results with others or re-sorting them, and without Yahoo branding visible. From their blog announcement: "As anyone who follows the search industry knows, the barriers to successfully building a high quality, web-scale search engine are incredibly high. Doing so requires hundreds of millions of dollars of investment in engineering, sciences and core infrastructure — from crawling and indexing technology to relevancy and machine learning algorithms, to stuff as mundane as data centers, servers and power. Because competing successfully in web search requires an investment of this scale, new players have effectively been prohibited from delivering credible alternatives to Yahoo! and Google. We believe the BOSS platform will begin to change that."