Here is a list of websites that accepts stock photographs or quality images. Each download of accepted submissions are paid accordingly. Check the respective websites for more details.

1. Shutterstock - one of the best paying stock photography sites with the largest database of quality images
Requirements: min. 4 megapixels
Payment: $0.25 per download, Paypal
Notes: non-exclusive

2. Fotolia - Simply the best deal for stock photos, EVER! 2,239,130 stock images online
Requirements: JPEG (RGB), 16 megabytes (maximum file size), 800*600 pixels
Payment: Based on ranking, Paypal, Ikobo, Moneybookers, check
Notes: non-exclusive/exclusive

3. StockXpert - the place to buy and sell stock photos
Requirements: JPEG (RGB), 16 megabytes (maximum file size), 800*600 pixels
Payment: 50% per download, Paypal, Ikobo, Moneybookers, check
Note: Check “Do not upload”, non-exclusive

4. Big Stock Photo - Choose from over 1,313,000 stock photos of $1 - $2 each
Requirements: JPG, EPS, AI, PSD, PNG and PDF
Payment: $0.50 up to $60, Paypal, Moneybookers, or check
Note: Non-exclusive, photos must be online for 90 days

5. CanStockPhoto where you use earned credits to buy stock images.
Requirements: JPG, at least 3.0 megapixels in size, maximum 20MB in disk size
Payment: $0.50 up to $60, Paypal
Note: Non-exclusive

6. Microstockphoto.
Requirements: minimum of (1600 x 1200) pixels. Approximately 2 megapixels
Payment: 35% for every photo sold or $0.25 for every image downloaded
Note: Non-exclusive

7. Dreamstime
Requirements: 3 megapixels or more in size, RGB, JPG quality of 12.
Payment: from $0.50 to $30 and if you want to sell the right, you will get 50% - 60%.
Note: Exclusive photographers also receive $0.20 bonus per approved submission.

8. iStockPhoto - is the world’s preeminent collection of member-generated royalty-free images, at the world’s best prices.
Requirements: RGB, JPG, minimum 1200 x 1600 pixels
Payment: 20% for royalty-free, up to 40% for exclusive images

9. World Panorama Stock
Requirements: High resolution, high quality panoramic (medium and large format and 360 degree digital) images only
Payment: 80% of every sale, Paypal
Cost: Free - first 25 images
$25/year - 26 to 50 images
$50/year - up to 100 images
$125 - images more than 100
$150 - promotion with direct contact with the customers

10. The Photo Binder Studio
Payment: 90% of every sale, once a month
Cost: Free

For other sites that are accepting submissions, visit Photority