Android: mrQuery makes launching applications, dialling contacts or searching as simple as typing the first two letters of the app, person or item you're looking for. Type "Gm" and the app will launch Gmail immediately, from any other app or view. It's like a text launcher for your Android phone.
mrQuery opens over your current app -- you don't have to switch apps or close your running app to use it. Just tap home and mrQuery pops up. Tap home again and you'll go back to your default launcher. After two letters, it will immediately go to call a contact with those letters in their name or launch the app name you're typing. If there's a conflict, like two names that begin the same, or an app and a name, it will display options, and you can pick the action you want.
mrQuery is a bit like previously mentionedConjure, in that you start typing what you're looking for (a la Launchy or Alfred on the desktop) and the app responds instantly. It's also similar to the built-in Google Search widget, although it has the ability to auto-launch apps and auto-call people as you type, and it persists across applications without you having to tap home to get to it. Plus, mrQuery still works if you've trimmed back some of Google Now's access for better performance.
mrQuery is available for free at Google Play. Hit the link below to grab it, or read more about it.
mrQuery (free) [Google Play]