http://topwebfiction.com/ http://webfictionguide.com/ https://www.royalroad.com/home See if anything on those sites floats your boat. [Mother of Learning] is a pretty good one that's 100% complete. [Worm] is also pretty good if you don't mind an all around pretty depressing atmosphere. It's also 100% complete with a sequel being currently written.
Just search for your preferred genre on google. It’ll show results. You can also try goodreads.com. It has books of all languages but it you can’t read them there. You can choose the book, buy the book or just search for pdf or online form of the book. Even though the sites won’t have author’s permission, you can read them just like the asian novels.
Royal Road Scribble Hub Wattpad Here is one that I enjoyed that had several authors contributing. It's called Shadow Unit.
There is a sticky thread with a list of outside sources webnovels in the Novel Discussion/General subforum.