How many freelance exchanges are there?
If I'm not mistaken, there are more than 25 freelance exchanges. And I think that's quite a lot.
Yes, indeed a lot. How do they differ from each other?
To be honest, I didn't go into the differences. But I know Upwork is the largest freelance exchange in the world, derived from the Elance + Odesk merger. Includes advanced collaboration tools.