Online freePhoto & Visual Search Engine (by francesco arleo)

1. online freephoto

1.1. everystock photo

1.2. stock xchng

1.3. stockvault

1.4. Green and Nature Photo

1.4.1. National Digital Library

1.4.2. cepolina

1.5. image after

1.6. Search Engine for Flickr

1.7. pdphoto

1.8. free photo art gallery

1.8.1. artchive

1.8.2. cgfa

1.9. Open Photo

1.10. pixel perfect

1.11. MorgueFile

1.12. wikimedia commons

2. visual search engine

2.1. viewzi

2.2. oskope

2.3. nexplorer

2.4. picsearch

2.5. yahoo image search

2.6. retrievr

2.7. imagery

2.8. picitup

2.9. liteflickr