voice recorder intergrated
A voice recorder for students would allow them train their reading skills but also to practice the studied language or answer to exercises using their voice.
Language teachers could insert the recoder as an applet in the units. ex. Students could be asked to read aloud some text and listen to their speech and compare to a given example (recording or text2speech).
For this I am using Vocaroo in a pop-up window.
Some browser support this possibility, as Mozilla (https://hacks.mozilla.org/2014/06/easy-audio-capture-with-the-mediarecorder-api/ )
Chrome has a speech recognition method (https://www.labnol.org/software/add-speech-recognition-to-website/19989/ )