Features. The features module enables the capture and management of features in Drupal.
A feature is a collection of Drupal entities which taken together satisfy a certain use-case. Features provides a UI and API for taking different site building components from modules with exportables and bundling them together in a single feature module. Diff. This module adds a tab for sufficiently permissioned users.
The tab shows all revisions like standard Drupal but it also allows pretty viewing of all added/changed/deleted words between revisions. Active maintainer/s Brian Gilbert (realityloop)Alan Davison (Alan D.)Lucian Hangea (lhangea) - Drupal 8 Port Inactive maintainer/s. Strongarm. Strongarm gives site builders a way to override the default variable values that Drupal core and contributed modules ship with.
It is not an end user tool, but a developer and site builder tool which provides an API and a limited UI. An example of such a variable is site_frontpage. In Drupal this defaults to node, which ensures that the front page gets content as soon as some exists, but for many Drupal sites this setting is simply wrong.