There are some great new Drupal 7 modules that Drupal 6 will never see, so we decided to separate them into specific pages based on your Drupal version. Here you should be able to find any useful Drupal 7 modules you are looking for. If you can't you might be able to find a Drupal 6 module that hasn't been officially upgraded to a Drupal 7 module in the modules issue queue. If you still can't find any Drupal 7 modules for the functionality that you require, you may have to upgrade an existing Drupal 6 module or write your own Drupal 7 module.