بالا 100 محبوب ترین ها ارجاع وب سایت
کشف جدید بالا ارجاع وب سایت ها در جهان بر اساس رتبه بندی، ترافیک و تعامل مانند wikipedia, zhihu یا quora.
Wikipedia is a free online encyclopedia, created and edited by volunteers around the world and hosted by the Wikimedia Foundation.
知乎，中文互联网高质量的问答社区和创作者聚集的原创内容平台，于 2011 年 1 月正式上线，以「让人们更好的分享知识、经验和见解，找到自己的解答」为品牌使命。知乎凭借认真、专业、友善的社区氛围、独特的产品机制以及结构化和易获得的优质内容，聚集了中文互联网科技、商业、影视、时尚、文化等领域最具创造力的人群，已成为综合性、全品类、在诸多领域具有关键影响力的知识分享社区和创作者聚集的原创内容平台，建立起了以社区驱动的内容变现商业模式。
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Access 130+ million publications and connect with 15+ million researchers. Join for free and gain visibility by uploading your research.
Internet Archive is a non-profit digital library offering free universal access to books, movies & music, as well as 624 billion archived web pages.
360doc个人图书馆是免费的知识管理与分享平台，注册后即可拥有自己的个人图书馆，一键保存你在微信、各网站看到的好文章，传承分享你的阅读创作历程，支持电脑、iPad和手机多屏同步阅读和管理。
《今日头条》(www.toutiao.com)是一款基于数据挖掘的推荐引擎产品，它为用户推荐有价值的、个性化的信息，提供连接人与信息的新型服务，是国内移动互联网领域成长最快的产品服务之一。
ScienceDirect is the world's leading source for scientific, technical, and medical research. Explore journals, books and articles.
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中国知网知识发现网络平台—面向海内外读者提供中国学术文献、外文文献、学位论文、报纸、会议、年鉴、工具书等各类资源统一检索、统一导航、在线阅读和下载服务。涵盖基础科学、文史哲、工程科技、社会科学、农业、经济与管理科学、医药卫生、信息科技等十大领域。
Paris - Avis d'utilisateurs et recommandations sur les meilleurs restaurants, magasins, divertissements, services et plus encore sur Yelp
Wikimedia is a global movement whose mission is to bring free educational content to the world.
豆丁网 - 分享文档 发现价值.
Thesaurus.com is the world’s largest and most trusted free online thesaurus brought to you by Dictionary.com. For over 20 years, Thesaurus.com has been helping millions of people improve their mastery of the English language and find the precise word with over 3 million synonyms and antonyms and the ability to filter search results by relevance, word length, and complexity.
The dictionary by Merriam-Webster is America's most trusted online dictionary for English word definitions, meanings, and pronunciation. #wordsmatter
Learn how to do anything with wikiHow, the world's most popular how-to website. Easy, well-researched, and trustworthy instructions for everything you want to know.
Explore the fact-checked online encyclopedia from Encyclopaedia Britannica with hundreds of thousands of objective articles, biographies, videos, and images from experts.
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Live world statistics on population, government and economics, society and media, environment, food, water, energy and health. Interesting statistics with world population clock, forest loss this year, carbon dioxide co2 emission, world hunger data, energy consumed, and a lot more
Current Time (World Clock) and online and printable Calendars for countries worldwide. Find the best time for web meetings (Meeting Planner) or use the Time and Date Converters. Online services and Apps available for iPhone, iPad, and Android.