A list of modules that set custom cookies. This can be used to help optimize cookie configuration on reverse proxy engines, e.g. Varnish.

Module Drupal 6? Drupal 7? Cookie name Notes
Authcache yes yes
Cache Control yes yes
Drupal for Facebook yes yes
FBConnect yes yes
Flag yes yes
Memcache optional optional session_name() Only optional session handler (memcache-session.inc).
Webform optional optional "webform-" . $nid Only when specifically enabled in the Webform settings.

Please keep the list alphabetical.