CC Images

Here you can find images licensed under Creative Commons or Public Domain:

• Wikimedia Commons
• Flickr CC Search
• FreeFoto
• http://photopin.com/

Public Domain

• http://pixabay.com/ - Find and share stunning public domain images (e.g 1, 2)
  • Downloads is okay, but unfortunately they have a review process for Uploads that can take about 5 days.
• http://www.public-domain-photos.com/
• http://publicphoto.org/
• http://www.public-domain-image.com/
• http://www.publicdomainpictures.net/
• http://www.sxc.hu/

Textures

• http://www.cgtextures.com/
• http://webtreats.mysitemyway.com/category/textures/

Icons

• http://vector.us/
• http://findicons.com/
• http://thenounproject.com/

Clip Arts

• http://openclipart.org/

Others

• http://www.agiledesigners.com/

Videos

Vimeo

Go to http://vimeo.com/search and click "Show Advanced Filters" on the right and select the desired license.