29. Chemspider www.chemspider.com ChemSpider is a chemistry search engine. It has been built with the intention of aggregating and indexing chemical structures and their associated information into a single searchable repository and making it available to everybody, at no charge. .
47. Find Design http://finddesign.blinkr.net/ A search engine powered via Google that has an emphasis on design related content from news, portals, blogs, directories, media, podcasts, companies, portfolios and other design resources. How does Google know which sites are design related? Through the Google coop framework, they set a list of design related sites and a group of keywords that orient the Google search engine to find design related results.
50. Midomi Music Identifier and Search http://www.midomi.com/ Midomi is music search tool because it is powered by your voice. Sing, hum, or whistle to instantly find your favorite music and connect with a community that shares your musical interests