3 Resources for Free Stock Images for Commercial Use.
Basically, any kind of creative professional needs stock photos to do their jobs.

Graphic designers, Software development teams, Journalists and editors. Basically, any kind of creative professional needs stock photos to do their jobs. Quality stock photos are a truly an essential part of any visually-creative digital and print experience.
However, in the past, access to quality stock images came with a hefty price tag. Major players in the space like Corbis and Adobe have been charging astronomical rates for years, causing the production of aesthetically-satisfying / beautiful works to be reserved for the few, deep-pocketed graphic design houses out there.
The popularization and proliferation of the Internet and Mobile web has changed all that. Gone are the days when a graphic designer, or web developer had to shell-out thousands of Dollars to acquire a few quality photos. Today, there are various destinations out there offering inexpensive , and even free awesome stock photos.
Ones that can be used for commercial purposes.
Lets take a look at three of my favorites:
Shopify's Burst
Burst is a free service offered by the E-commerce platform giant, Shopify.
Although, Burst does not seem to have a large database of free stock photos, I have to be the first to say that I actually like using Burst from time to time as the photos offered are of exceptional quality and seem to have a certain modern and positive vibe about them.
Burst is a great tool to have in your back of tricks as a creative.
Wix Stock Photos
Some may not be aware of this, but Wix, the popular web design platform for do-it-yourselfers, besides having a set of dynamic web design tools, also has a huge database of quality stock photos and videos.
The company first introduced its free Stock photo portal, but has since evolved to become ( in my opinion), an invaluable source for affordable and even free stock photos and footage. The average stock photos goes for about $2.99 with stock videos going for about $14 a pop.

Picjumbo
With more than 5 million downloads since it launched in 2013, Picjumbo is a popular free resource for social media images. Users can click through the different categories of over 2,000 free high resolution photos, or download a pack that includes all images and three Photoshop mockups (in exchange for a donation of $15 or more.)