1. GRATISOGRAPHY
http://www.gratisography.com/

2. PICJUMBO
http://picjumbo.com/

3. FREE REFE MOBILE PHOTOS
http://getrefe.tumblr.com/

4. UNSPLASH
http://unsplash.com/

5. LITTLE VISUALS
http://littlevisuals.co/

6. SPLITSSHIRE
http://splitshire.com/

7. NEW OLD STOCK
http://nos.twnsnd.co/

8. FUNCTION FREE PHOTO
http://wefunction.com/category/free-photos/

9. JAY MANTRI
http://jaymantri.com/

10. SPLASHBASE
http://www.splashbase.co/

11. PICOGRAPHY
http://picography.co/

12. FOODIE’S FEED
http://foodiesfeed.com/

13. DESIGNERSPICS
http://www.designerspics.com/

14. TRAVEL COFFEE BOOK
http://travelcoffeebook.tumblr.com/

15. PEXELS
http://www.pexels.com/

16. PUBLIC DOMAIN ARCHIVE
http://publicdomainarchive.com/

17. Life of fix
http://www.lifeofpix.com/