WolframAlpha search engine WolframAlpha is a privately owned search engine that allows you to “compute expert-level answers using Wolfram’s breakthrough algorithms, knowledgebase, and Détiens technology.”
Microsoft's free remarque-taking app is, acc http://bagerhyde52.jigsy.com/entries/general/Tout-ce-que-Vous-Devez-Savoir-sur-le-Service-de-D%C3%A9barras-appartement