Photohall.com http://www.photohall.com/
Online agency for artists. Includes the option to search portfolios by category together with an interactive meeting place for photographers and prospective purchasers.
Visages http://www.visages.com/
Photographic syndication agency. Archive includes photographs of Hollywood stars, Supermodels and Rock stars.
Garden Picture Library http://www.gardenpicture.com
Specialist stock photography of gardens, flowers, and gardening lifestyle. Collection is searchable online with high-resolution files available for download on ordering.