Twitter+Search

RealTime Searching [|CNET's Twitter Search Sites]
 * [|SearchTwitter]
 * [|Listorious] Twitter people search
 * [|Twazzup] (sorts results and lists hot topics!)
 * [|hashtagify.me]
 * [|Social Mention]
 * [|Twendly] (who tweets about what)
 * [|Searchtastic]
 * [|Collecta] (realtime results from streams of news sites, popular blogs and social media, and Flickr)
 * [|Leapfish]
 * [|OneRiot]
 * [|Scoopler]
 * [|Thoora]
 * [|Evri]
 * [|Scoopla](realtime results)
 * [|BingTweets]
 * [|Surchur] (for searching social networks & more)
 * [|TweetScan]
 * [|Mailana] (Network Twitter maps and for searching people who talk about . . .)
 * [|Twitterment]
 * [|Twellow] (people search, a Twitter Yellow pages)
 * [|Tweefind] (returns results by rank)
 * Topsy
 * [|Twitscoop]
 * [|Twoogle] (searches Google and Twitter simultaneously)
 * [|OneRiot] (searches items with links)
 * [|Tweetmeme] (what's hot on Twitter, since it's all about the act of re-tweeting. It's not a great search engine, though. See also
 * [|DailyRT], which has a better search function, including the capability to search only within the network of people you follow.
 * [|Monitter] (multi-column view of real-time Twitter search results)
 * [|Topsy] (finds most influential people on topic)
 * [|CrowdEye] (stats on your query, and popular related links)
 * [|Itpints]
 * [|Tweefind]
 * [|Twitority]
 * [|Twitalyzer Search]
 * [|Yauba]

More on Twitter apps here