Upwork

Upwork is the world's largest freelancing website. As an increasingly connected and independent workforce goes online, knowledge work is shifting online as well. This shift is making it easier for clients to connect and work with talent in near real-time and is freeing professionals everywhere from having to work at a set time and place. Freelancers are earning more than $1 billion annually via Upwork. Upwork is headquartered in Mountain View, California, with offices in San Francisco, Chicago and Oslo, Norway.