Freelancer is an Australian crowdsourcing marketplace website, which allows potential employers to post jobs that freelancers can then bid to complete. Founded in 2009, its headquarters is located in Sydney, Australia, though it also has offices in Vancouver, London, Buenos Aires, Manila, and Jakarta.

Freelancer is a marketplace where employers and employees are able to find each other. The site also allows members to host and enter contests for which prize money is offered as a reward. Freelancers and employers develop profiles on the site as they offer, win and complete work and write and receive reviews of people they work with or for. A series of account options are offered, ranging from free accounts through to professional subscriptions.

Freelancer.com is the world’s largest freelancing and crowdsourcing platform in number of users and projects. It currently has over 16 million registered users globally from beyond 247 countries, regions and territories.

More than 8 million projects have been posted on the site in over 850 project categories like software development, graphic design, sales and marketing, and even astrophysics. Freelancer.com allows small business and entrepreneurs to hire a global talent pool of freelancers to get work done. 

According to en.wikipedia