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

Listen to native speakers, mimic the audio while recording, receive instant feedback on spoken phases. Then submit your recording to be evaluated by real native teachers. Read more.

waichinese.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

The ultimate solution for quickly looking up Chinese words on your smartphone or tablet, no matter what app (or system screens) you are using. Note: For Android 5.0 (Lollipop) and higher. Whe... Read more.

play.google.com

Anki is spaced repetition software. You can create cards and review them, Anki takes care of the rest. This is an Anki video deck containing each sentence from the movie 小城之春. Each card has one ... Read more.

ankiweb.net

The official introduction sums it up pretty well: It's a place where you can listen to Chinese music and learn Chinese with famous Chinese songs in Mandarin (simplified characters). As well, le... Read more.

singchinesesongs.com

Word Reference offers several good forums for discussing languages and this is the Chinese section. It's perhaps not as active as Chinese Forums and I don't follow this forum regularly, so I don't... Read more.

forum.wordreference.com

FREE multi-platform app and desktop software. I use it for looking up words, checking characters etymology, stroke order, collocations. The mobile app also has other functions. For me, this is ... Read more.

smarthanzi.net

Forumosa is a major online forum where you can discuss anything regarding Taiwan, including living there, learning Chinese, finding friends, jobs or language exchange partners and much more. There'... Read more.

forumosa.com

Description provided by OptiLingo (I have not yet tried this service myself): "OptiLingo is a hands-free language learning app that prioritizes learning Chinese through speaking rather than typi... Read more.

optilingo.com

Online Chinese flashcards that adapt to your learning, Chinese speaking practice using voice recognition, and a simple, fast Chinese-English dictionary. Read more.

fastchinese.org