百度百科是一部内容开放、自由的网络百科全书，旨在创造一个涵盖所有领域知识、服务所有互联网用户的中文知识性百科全书。 在这里你可以参与词条编辑，分享贡献你的知识。

Good old Wikipedia, great new look

天工网建筑行业资料库,提供大量建筑行业资料免费下载,包含论文，图纸，方案，规范，毕业设计，软件，培训，考试等等分类资料

Facebook is a social utility that connects people with friends and others who work, study and live around them. People use Facebook to keep up with fr...

Search the world's information, including webpages, images, videos and more. Google has many special features to help you find exactly what yo...

Translation-Dictionary offers free online dictionary and free translation services for many languages. i.e. English-French translation and English-Chi...

Webwiki finds websites on various topics and keywords. Simply enter your search term or select a website category.

Google+ aims to make sharing on the web more like sharing in real life. Check out Circles, Messenger and Hangouts, just a few of the things we&#39...

Free tool for any websites. Fully infomation whois of domain as well as page rank, traffic analysis site, back links, check your ip, reverse ip, keywo...

YouTube is a place to discover, watch, upload and share videos.

Flickr is almost certainly the best online photo management and sharing application in the world. Show off your favorite photos and videos to the worl...