We all know Google. Their services are ubiquitous and for the most part really awesome. But there's more than Google in search.
DuckDuckGo and Wolfram Alpha are search engines, just like Google.
DuckDuckGo (DDG) is a search engine based in Valley Forge, Pennsylvania that uses information from crowd-sourced sites with the aim of augmenting traditional results and improving relevance.
Wolfram Alpha (WA) is an answer engine developed by Wolfram Research.
DDG is more like Google than WA. You will feel more familiarity with DDG than with WA and that's because they have two distinct purposes, being WA more focused on the encyclopedia search style, if I can put it this way. Let's not say more. Search and find for yourself but first take a look at this example.
Here are two search results of the same term "Portugal" in DDG and WA. Obvious, right? Note that I cropped the screenshot. There's more information in each search, of course. :)