Global Visualization Viewer - United States Geological Survey
This site provides 1/8 Landsat images. The color combination is fixed at RGB=742.
It also provides Terra satellite images.
Its interface doesn't allow direct downloading of images, so you must look into your "Temporary Internet Files" folder to recover them.
ARCBC - Asean Regional Centre for Biodiversity Conservation
This site provides 1/8 Landsat images. The color combination is fixed at RGB=742.
The images are deformed! Original 1/8 images are first rotated, then skewed to fit into a rectangular frame.
CEO - Center for Earth Observation, Yale University
This site provides only a limited number of reduced Landsat images, mostly from 1970s and 1980s.
Digital Globe Archive Search
This site provides reduced samples of QuickBird images. Its coverage is not very systematic, mostly concentrated around major cities, sightseeing spots or strategically important areas.
You may chance upon interesting images which, when read and interpreted in conjunction with other images, provide curious details.
SISEA Online - Space Imaging Southeast Asia Archive Search
This site provides reduced samples of IKONOS images. Its coverage is rather sparse, and its clickable search map requires some getting used to.
You may chance upon interesting images which, when read and interpreted in conjunction with other images, provide curious details.