Are there any major public repository hosting services that provide good organizational tools for multiple repositories?

GitHub, as far as I have been able to determine, only supports a flat list sorted by last update.

This is annoying when a developer has a lot of repositories. I'll come across something useful in one of my areas of interest from a given developer, and then want to look at their other repositories to see if they have anything else in that area of interest. In a sane design, all of their repositories in that area would be organized under a folder, and this would be easy.

BitBucket seems to have the same limitation.