Here you'll find a bunch of different subreddit ranking lists. You can click a subreddit name to see stats (graphs, etc.) for that subreddit. Click on the link icon next to the subreddit's name to go directly to the subreddit. You might also like to check out some network visualisations of subreddit relationships, and I've also made a tool to analyse user/commenter overlaps between subreddits. Caution: Please do not rely on the accuracy of this site's data for anything serious/important - the data collector is not robust, and so the numbers should only be used as a general guide.
Found a bug, or got an idea for a stat/ranking that we don't have? Please leave feedback here. Please note that I work on this only as a hobby, so I may not be able to implement feature requests and bug fixes in a timely manner. Apologies in advance!