The 9 to 5 workday isn't as common as it once was. Now, more and more people are becoming freelancers, which allows for flexible hours and the ability to work from home.

In fact, 53 million Americans — or 34% of today's workforce — holds a freelance job, according to a new report. 

About 68% of those professionals said they freelance to earn extra cash, while the remaining 42% do it to have a flexible schedule.

In addition to the control and supplemental income freelancing offers, it can also add some excitement to one's career, says Sara Sutton Fell, founder and CEO of FlexJobs, a service that specializes in helping connect people with flexible jobs. 

"If you can get a steady stream of freelance jobs, it'll provide you with variety, whereas working in one traditional office job may only offer the same responsibilities day after day," Sutton Fell explains.

To provide an even better feel of the freelance landscape, Flexjobs compiled a list of the best companies for freelance work by analyzing how many freelance listings employers posted between August 2013 and August 2014.

For anyone hoping to gain more control over their career, or who just want to work from home, here are the 55 companies with the most freelance opportunities: 

US-Reports K12 Razorfish Overland Solutions, Inc LanguageLine Solutions CompuCom Systems Inc. Carolinas HealthCare System Appen Judge Group ChamnessOnline Edmentum Connections Academy Roundarch Isobar Time Warner Cable Aureus Group Shutterfly RealPage The Center for Client Retention Horizontal Integration Rogers MakroTech Overland Solutions Inc. Clarity Consultants Collabera Shmoop KPMG Freeman Leonard Bloomberg GoPro Achieve Test Prep Expedia CompuGain Cook Systems International Walmart Nintendo Lionbridge United Nations Development Programme Direct Interactions ObjectWin IVI International CACTUS Communications Action Against Hunger Thrillist Winston Retail Solutions Mater Health Services Pac-12 Enterprises donorworx Bustle Conde Nast Euromonitor International HUGE Active Network

See Also:

The 10 Most Underrated Jobs Of 2014Here’s One Thing You Should Never Do On LinkedIn If You Want To Land A Job At A StartupHow To Be The Most Popular Person In The Office

SEE ALSO: The 10 Best Cities For Freelancers