Fiverr - One marketplace, millions of professional services.
rysolv - Fix open source issues, get paid
Freelancer.com - Search for jobs related to Www freelancer com homepage or hire on the world's largest freelancing marketplace with 12m+ jobs. It's free to sign up and bid on jobs.
uTask - Hire a coder by having them do a real-world task
seoclerk - SEOClerks is a marketplace originally designed for SEO services.
Teamtailor - Teamtailor is the hub of recruitment that attracts candidates and manage their applications.