Upwork connects businesses with freelancers across a huge range of skills: writing, design, programming, marketing, translation, virtual assistance, and more. Clients post projects, freelancers submit proposals, and the platform handles contracts, time tracking, and payments. You can hire someone for a one-off task or build a long-term working relationship. The platform also offers talent pools and enterprise solutions for larger companies.

For freelancers, Upwork is a way to find clients without cold outreach, though competition can be steep for beginners. The site takes a service fee on earnings, and there are rules about how communication and payment must happen within the platform. For clients, it provides access to a global pool of workers with reviews and work history visible. It's one of the largest and most established freelance marketplaces, and it's used by both small businesses and large enterprises.