收录中外文学术期刊7000多种，资料、文献非常丰富。注册后可直接下载。
这个网站集合了世界各地护照样式，还有办理程序，办理难易程度等等。Passport Index curates, sorts and ranks the world's passports. Explore passport designs, browse by visa-free score, color, or country and discover how they rank.
UI-cloud素材搜索引擎。UICloud collects the best user interface designs and provides a search engine for you to find the best UI elements that you need.
提供学术搜索服务的公益站点
浙江图书馆-是中国国内创办最早的省级公共图书馆之一。
是一款基于数据挖掘的推荐引擎产品。
Open Access Library (www.oalib.com) is an academic search engine and publisher. You can download research papers for free and submit your paper to it. It is a shared academic database.
