Here is a program for searching that is for Windows only, at least for now.
NetFinder uses system´s default browser to show results. When you have chosen an engine and added keywords you want to search, then verify by pressing Enter/Return key. After this the system´s default browser will open showing the results.
NetFinder supports Google, Yahoo, Privatelee, Wolfram Alpha, Youtube and StackoverFlow searches. If you are using multiple search keywords use + between them. For example: hello world becomes hello+world.