I was wondering something similar. Does Glacier have any way to see a preview of the images you are downloading? If I upload 100 images with serialized file names (001.jpg, 002.jpg) how do I know which images to download?
There's no preview. Actually there's no way to download or even list your archives through the AWS Console. You need to write (or find) an app that uses the Glacier API.
This is most of what the proposed software is. A local, lower-res index of the huge files you have deep archived.