This site by Jun Da contains a lot of very interesting resources for anyone who wants dig deeper into frequency lists. One set of data I haven't found anywhere else is a frequency list of syllables... Read more.

lingua.mtsu.edu

Wenlin software makes learning Chinese easier and more interesting, for begining students, life-long speakers, and scholars alike. It combines a comprehensive Chinese dictionary, a Unicode text edi... Read more.

wenlin.com

Learning Chinese with real content. An ever growing collection of curated Chinese content. Read more.

shinychinese.com

A website on the etymology of Chinese characters, with a lot of images of their past forms from different periods. Read more.

chineseetymology.org

Finally, Duolingo added a En->ZH course. As Duolingo is the most popular gamification learning app, the learning experience is relatively streamlined and tested. The monetarization aspect leads to ... Read more.

en.duolingo.com

Ninchanese is a complete way to learn Chinese. Its online course allows you to learn and practice how to read, write, speak and understand Chinese in an enjoyable manner. It combines game mechanics... Read more.

ninchanese.com

This website contains a lot of short and easy-to-access articles about science and technology related articles (although they are usually very lightweight, you don't need to actually be a professio... Read more.

jandan.net

This is the official Chinese version of the popular news website TechCrunch, focusing on information technology and related companies, start-ups and much more. Read more.

techcrunch.cn

This course is designed to give a practical command of spoken Standard Chinese. Nine situational modules form the core of the course. Each core module consists of tapes, a student textbook, and a w... Read more.

fsi-language-courses.org

This site collects almost a thousand textbooks used in Chinese schools, ranging from grade 1 up to senior high school. Subjects cover Chinese, mathematics, English, physics, chemistry, biology, his... Read more.

dzkbw.com

TutorMandarin is an online Chinese tutoring software and service. Students take 1-on-1 classes with professional Mandarin tutors on PC, Android, or iOS. Full courses from Beginner to Advanced, Spok... Read more.

tutormandarin.net

Mondly is a mobile app very similar to Duolingo (which does not support Chinese). Pro: * more or less straight course to take, no distractions * It has several languages besides Chinese. Th... Read more.

mondlylanguages.com

This is a language learning game that features among other languages Mandarin Chinese (at first only Japanese was supported). It aims to teach you about 400 words by having a virtual character walk... Read more.

playinfluent.com

This game helps you learn tones. You will see the lyrics of Chinese songs approaching you and you're supposed to select which of them actually belong to the lyrics you're hearing. It's a reasonably... Read more.

fourtones.com

This site offers a wide range of short articles on science and technology related articles. They also offer MOOCs, but I haven't actually tried them yet. This is from their official about page: ... Read more.

guokr.com

Engadget is a multilingual technology blog network with daily coverage of gadgets and consumer electronics. This is the Chinese version, so anyone who is interested in tech will find lots of readin... Read more.

chinese.engadget.com

This is a site where you can find theses and dissertations published in Taiwan. It's an excellent source if you want to find research about specific topics and improve your reading ability at the s... Read more.

ndltd.ncl.edu.tw

This site is provided by 科普中国, and as the name implies, it answers why questions about everything from aliens to economics. The articles are of varying length and while there aren’t literally 10,00... Read more.

10why.net

This website provides a large-scale psycholinguistic norm of 3,314 Traditional Chinese characters along with their naming latencies collected from 140 Chinese speakers. Several variables are gi... Read more.

ball.ling.sinica.edu.tw

The Chinese Language Institute (CLI) offers free Mandarin learning resources in the form of articles on a variety of topics including Chinese characters, Chinese grammar and chengyu. They also offe... Read more.

studycli.org