Modules are grouped on the module administration page (admin/modules in Drupal 7) by Package. Sensible grouping can greatly enhance site builders' Drupal experience. (Package is defined, optionally, in our module's .info file.) As developers of contrib modules, we can come to this wiki page before choosing our package name to see what other thoughtful module developers have chosen for their package. [Note: the wiki page is now envisioned more for documentation than guidance for now.] Then, after we choose an existing package name or decide a new one must be created (or propose a new package, hoping to reach critical mass to break out of the "Other" ghetto), we record that here. Sprinkle the magic dust of collective intelligence and maybe we'll have an elegantly ordered list of modules on every user's Drupal 7 site.
Packages with no parenthetical comment are implicitly endorsed, so please flag questionable categories. Please keep all lists in alphabetical order.
