剑桥词典
Free Online English Dictionary, Thesaurus, Word of the Day and other language resources from Cambridge University Press. Online Dictionary. Online Thesaurus. Free Dictionary.
韦氏词典
Free online dictionary, thesaurus, spanish-english and medical dictionaries, audio pronunciations, Word of the Day, word games, and many more high-quality Merriam-Webster language resources.
查单词
在线查单词网（简称：查单词）创办于2008年3月30日，旨在提供便利的在线单词查询服务。词典追求界面简单，查询响应即时，解释意思一目了然，海量词库。用户可以输入英语单词，英语词组，汉字，汉语词语，汉语拼音，英语发音等进行查询。词典的人工智能能够帮助大家迅速找到自己所需要的单词或词组。
Dropbox
Dropbox is the easiest way to store, sync, and, share files online. There's no complicated interface to learn.
FileDen
File Den offers a free, secure and reliable file storage service with direct link sharing to 3 million individuals and businesses worldwide.
Box.net
Collaboration tools adopted by over 50,000 companies globally. Box simplifies online file storage, replaces FTP and connects teams in online workspaces.
千易文件分享
不需要注册的免费上传空间,用Google、MSN、人人网账号即可登录。无空间大小限制，文件永久保存，高速稳定的上传和下载速度，并提供下载统计、论坛调用、迅雷下载等丰富的扩展功能。
Linux Online
Comprehensive information and resources about the Linux Operating System.
CSO Online
CSO - information security & physical security thought leadership - news, analysis, how-tos & jobs.