Drupal 8 Version Number
8.x-3.0
Release Date
Description and Notes
The Chaos Tools suite is a set of internal APIs that first appears in (Drupal 6?) that provides helper functions for various types of component and UI features. Its use is nearly universal in Drupal deployments. Its Drupal 8 release status have been current since before the full release of Drupal 8 core itself.
Project Link
