The WYSIWYG module is my favorite for rich text editing in Drupal 6 and Drupal 7. (In Drupal 8, WYSIWYG is in core.) Here's how I set it up.

Display Suite

Provides some advanced layout and display options for content. "Display Suite is a module that takes over the rendering of entities."

Focal Point

Sponsored by NBCUniversal, the focal point module seems to have been inspired by the image field focus module