Upwork
The world’s largest freelance platform, covering over 70 fields including programming, design, and writing. It supports hourly and fixed-price projects. Clients are primarily from European and American companies, and salaries are relatively high ($30-100 per hour).
Disadvantages: Intense competition, and the platform takes a 5%-20% commission.
Freelancer
An established platform with a wide variety of project types, supporting both bidding and direct hiring. It’s suitable for beginners, but it tends to have a high percentage of low-cost projects. Be aware that the platform’s commission is high (10% or a fixed fee).