rgbstock.com
Rgbstock has a huge number of high quality free stock photos and dazzling free graphics for illustrations, wallpapers and backgrounds.
LINK: http://www.rgbstock.com/
goodstock.photos
A collection of free photos for you to use anywhere for anything. No fees. No credits. No limits.
imcreator.com/free
Apart from templates and icons, most free resources are high quality photos. You can use these photos for commercial purposes, however most of their images require an attribution.
nos.twnsnd.co
New Old Stock is your number one souce for vintage photos. Every single picture you see on the site is free of copyright restrictions.
LINK: http://nos.twnsnd.co/
morguefile.com
Just like Pixabay, Morguefile allows you to download royalty free images to use in creative projects. It has got over 350 000 pictures. If you do decide to download from the portfolio section, you must read the creative commons license.
LINK: https://morguefile.com/
openphoto.net
Openphoto is a niche photo platform for artists, developers, teachers, and students. Every single image on the site has some sort of Creative Commons licensing.
LINK: http://openphoto.net/
freedigitalphotos.net
Freedigitalphotos.net provides free and premium stock photos. All images are of high quality, produced by our community of professional stock photographers and digital illustrators.
burst.shopify.com
Burst is the stock photo site of choice for entrepreneurs. Powered by Shopify, Burst provides free stock photos for business owners. All photos are offered under the Creative Commons Zero (CCO) license.
pixabay.com
Pixabay offers a ton of quality photos that released under Creative Commons CC0 into the public domain. Over 1mln free stock photos.
LINK: https://pixabay.com/
isorepublic.com
Isorepublic provides high-quality images that can be used by designers, developers, bloggers, marketers and social media teams.
LINK: http://isorepublic.com/