multiple search engines All-In-One search engines help you easily harness the collective power of multiple search engines.

They do so by fetching search results for your query from multiple places (like Google, Yahoo, Windows Live, etc.) and then aggregating the results on a single page.

Let’s look at some of most popular all-in-one search tools on the Web.

dogpile

Dogpile – This is original meta search engine that aggregates search results from Google, Yahoo, Ask.com and Live Search.

Other than web pages, Dogpile also lets you search images, audio and video clips though you may sometimes have trouble problem figuring out if the search result points to a paid Google ad or an organic search result.

triplify

Triplify.com – Triplify take a slightly different when aggregating search results. It produces a summary (along with description) of the top results from Google, Yahoo and Live and arranges them in the same linear order.  You also have the liberty to choose search engines that should be included for the query.

url-search

URL.com – This easy-to-remember address gathers results from Yahoo!, MSN, and Google. It takes the top 10 results from all engines and arranges them in a nice tabular layout.

When all the search engines agreed on the #1 result, you can directly go to that result something like I’m feeling lucky on Google. Also offers search suggestions in case you misspell a query.

scour

Scour.com - Scour too lets you search Google, Yahoo and Live from one place but there are a couple of unique features in Scour worth mentioning. First, it lets you sort search results by search engine if you are not too please if the default order.

The search interface is nice and Scour also offers related search queries similar to Google and Yahoo. You can double click any word in the description to further fine-tune the search results. And then there’s the community element something on the lines of Google Search wiki. You can view comments from other scour users and also add you own votes.