This is a sortable & searchable table of the CPAN distributions that don't have a github repo, and so can't be candidates for the CPAN pull request challenge. Maybe you could help us get some of these onto github, so they can become part of the challenge?
The RDeps column is the number of reverse dependencies that the distribution is — this is the number of other distributions on CPAN that depend on the dist in question. The Score is calculated according to a scoring scheme described in a blog post.
Todo: show more details; click on score to get break-down of the score. Email me any suggestions: neil at bowers dot com.