A good website to share info with students?

What is the Chinese equivalent to Google docs?
I don't need to make a fancy website, but it would be very useful to have somewhere to share messages, worksheets etc with the students and for them to get in touch with questions/problems etc
I have a load of WeChats and emails for class leaders, but if there was a way to share links with the whole class easily.....

Anyone know of anything?

When last this came up, QQ groups were the easiest and most effective solution. I assume they still are.

http://raoulschinasaloon.com/index.php?topic=9469.0

Basically, find a QQ wizard in your classes, have them set up a class group and invite you, then upload your files to the group. Upload space is (or was back then) huge, and files can delete themselves after a time limit of, say, a week or so.