I'll keep this Post pretty much Straight

1. CodeMentor ( codementor.io ) Codementor is an online platform providing instant one-on-one help for software developers by utilizing screen sharing, video and text chat, in order to replicate for users the experience of having a mentor for code reviewing, debugging, and online programming.
2. Upwork ( upwork.com ) Upwork, formerly Elance-oDesk, is an American freelancing platform where enterprises and individuals connect in order to conduct business. In 2015, the Elance-oDesk merger was rebranded as Upwork and the company's full name is now Upwork Global Inc.
3. Fiverr. ( fiverr.com ) Fiverr is an Israeli online marketplace for freelance services. The company provides a platform for freelancers to offer services to customers worldwide
4. Freelancer ( freelancer.com ) Freelancer is an Australian freelance 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.
5. Toptal ( toptal.com ) Toptal is a global remote company that provides a freelancing platform, connecting businesses with software engineers, designers, finance experts, product managers, and project managers. The company has no headquarters.
6. Guru ( guru.com ) Guru.com is a freelance marketplace. It allows companies to find freelance workers for commissioned work. Founded in 1998 in Pittsburgh as eMoonlighter.com and still headquartered there.
7. TrueLancer ( truelancer.com ) Truelancer is a Global Freelance Marketplace, Network of 600,000+ Freelance Professionals. Businesses can HIRE Freelancers/Contractors anytime to Scale their Business and get the work done quickly.
8. PeoplePerHour ( peopleperhour.com ) PeoplePerHour, legally People Per Hour Limited, is a UK-based company whose function is as an online platform giving businesses access to freelance workers.
9. CrossOver ( crossover.com ) Crossover connects companies to the best talent from around the world and provides a seamless end-to-end solution for remote team management.
10. Arc Dev ( arc.dev ) Arc Developers cover every tech stack and time zone, delivering complex projects under tight deadlines in a variety of industries. They are proven problem-solvers and trusted team members.
11. Scalable Path ( scalablepath.com ) Scalable Path is a network of 19,000+ remote software developers from more than 138 countries. For over a decade, we have specialized in helping companies scale their software teams with the goal of providing the best hiring experience.
12. Turing ( turing.com ) Turing.com enables companies to hire senior pre-vetted remote software developers who have strong technical & communication skills and work in their respective timezones. Hundreds of companies including those backed by Google Ventures, Andreessen, Founders Fund, Kleiner, and Bloomberg have hired Turing developers.
13. Lorem ( asklorem.com ) Lorem is an on-demand freelance marketplace that connects non-technical business owners with high-quality web developers and designers in less than 10 minutes.
14. Soshace ( soshace.com ) Soshace is a recruitment platform that connects IT professionals and companies. We provide reliable Angular 2/4, React.js and Node.js developers, all of whom
15. Adeva ( adevait.com ) Adeva is an exclusive developers community. We partner with companies to scale engineering teams on-demand and on budget. Our vision is to bring equal opportunities to all developers around the world, no matter their location, gender or race.
16. Speedlancer ( speedlancer.com ) Speedlancer is the world's fastest freelance marketplace, delivering design, writing & data-entry work in just 4 hours by curated freelancers.
17. Worksome ( worksome.com ) Worksome is the leading freelance platform for hiring and managing freelancers in the UK. Manage your freelance talent like never before.
18. Certace ( certace.com ) certace is a digital expert marketplace for data science projects. By solving data challenges for numerous clients, our independent data science experts are at the forefront of their fields, and bring fresh insight into data problems without incurring the long-term costs associated with a permanent hire.
19. Bonsai ( hellobonsai.com ) The global operating system for freelance labor. Backed by Y Combinator, Matrix Partners, and Index Ventures.
20. Remote One ( remote.one ) Track your time, manage projects, and send invoices faster and more efficiently with RemoteOne They make managing remote businesses more productive for freelancers, entrepreneurs and digital nomads.