SEARCH ENGINES

* Amarillas - Ar
* La Brujula - Ar

* Aonde - BR
* Auxilio-a-Lista - BR
* BoaDica - Pesquisa de preços
* BrazilBiz2Biz - BR
* Bulas de Medicamentos
* Buscas - BR
* Domínio Público - Pesquisa Básica
* Fapesp - Pesquisa de Domínios - BR
* Lokaliza - BR
* ZapBusca - BR

* AEIOU - Pt
* SAPO - Pt

* ASK - USA
* Alexa - USA
* Clusty - USA
* Dogpile US
* Excite - USA
* Findlink.com - USA
* Google Search Engine - EUA
* HostSearch
* HotBot - USA
* Internic (domain regist.)
* Jayde - USA
* Kellysearch - USA
* Live Search - USA
* Lycos - USA
* LookSmart - USA
* MetaCrawler
* QRCodes-Index - USA
* Switchboard - USA
* Starting Point - USA
* Web Search - USA
* Yahoo - USA
* ZoomInfo - USA

SOCIAL NETWORK
* Board Reader - Message Board Search
* FriendORFollow
* Gravatar - Globally Recognized Avatars
* #hashtags.org
* HowSociable - visibility of your brand
* Less Friends
* Mr. Tweet - Your Personal Networking Assistant
* namechk - Check username or vanity url
* Nearby Tweets - geography–centric social tool for networking
* Ping.fm
* Retweetrank
* Retweetist - tracking Retweets
* Sideline - Twitter search tool
* socialmention - A social media search engine
* Socialoomph - (TweetLater)
* TinyURL.com - shorten long URL into a Tiny URL
* Tweepler - Twitter Followers
* TweepSearch
* TweetBeep - Twitter Alerts by Email
* Tweetburner
* Tewwter Counter
* Twetter Grader
* TweetScan - search for words on Twitter
* TweetStats - Tag cloud for last 500 Tweets
* TwitPic - share photos on Twitter
* TwitPWR - Short URL Service with Stats & Analytics
* Twitter
* Twitter Tags - directory
* TwitterFeed
* Twingly - Microblog Search
* twubs - #hashtags made usefull
* Twitterholic.com