PeoplePerTask is the fastest growing platform for experts and service providers. It's a one-stop-shop for experts from different domains to let people earn and keep their hard-earned money instead of taking a big chunk of percentage for every transaction.
0% - No commission or fee charged to companies to post their jobs
0% - No commission or fee charged to freelancers for bidding on projects.
2.9% fee charged for payment processing for freelancers for the first 3 months and then 4.9% which (others charging 10-20%).
2.9% payment processing fee charged to the employer/company.
0% - No commission or fee charged to users (employee) applying for jobs
0% - No commission or fee charges to freelancers to post services.

Posting Job is free
Posting Project is free
Posting service is free
Bidding on projects is free for freelancers
Applying for Job is free for Employee
Only when freelancer gets paid and Employer pay for project or service, we charge a minimal payment processing fee (bank fee)
Nevertheless, it's not about the lowest commission, in terms of features its caters far better features than its competitors like associating exams with jobs as a prerequisite so only those users can apply for a job who passed that exam, that will help an employer to only deal with primarily vetted candidates.
Very powerful dashboard to show earnings, jobs, services and much more. I highly encourage to explore https://www.peoplepertask.com