Fiverr and Upwork are the largest freelancing websites. They serve the same purpose: to connect people to freelancers that can handle their projects. They both have similar features but different styles of operation.
Upwork is a freelance platform that connects individuals and businesses to freelancers that can handle their jobs. Services on Upwork encompasses writing and translation, Web, Mobile and Software development, Data Science and Analytics, Design and Creative, Admin Support, and many more.