As read in Diamond Notes, Amazon is moving into CDN market with CloudFront.

Some Content Delivery Network providers

• Akamaï
  • Akamaï on Crunchbase
• BitGravity
  • BitGravity on Crunchbase
• EdgeCast Networks
  • EdgeCast Networks on Crunchbase
• Limelight Network
  
  • Limelight Network on Crunchbase
• Panther Express
  • Panther Express on Crunchbase