Is It a Bird, Is It a Novella...?

For occasions when you have a piece of writing that is too long to publish in a magazine, but too short to turn into a book...

...these sites may be the places to publish at, or at least distribute...

And if you are looking for interesting new things to read, you should also have a look at Byliner, Longreads and Longform. 

Speaking of interesting things to read, this book is excellent: