Conditional Fields and Drupal 11

CTools is a developer toolkit that provides APIs, etc. to improve the developer experience. Most often you don't install this directly; it's a dependency of some other module you want.

Improves the default administration toolbar menu by turning it into a drop-down, for fast access to all administration pages. Can also provide access to additional tools from the admin menu.

Provides the ability to create manual redirects and maintain a canonical URL for all content, redirecting all other requests to that path. Features Common API for loading, saving, and deleting redirects. Case-insensitive redirect matching with a hook to allow other modules to narrow-down the candidate redirects.

Replaces Views' default single/multi-select boxes with radio buttons or checkboxes, respectively. You can add fields to the exposed filters to improve the user experience.

Allows applying actions to multiple items in a view. Operations are performed in batches, to avoid timeouts. Supports custom actions, confirmation steps, selection across all view results, and more.

Linkit provides an autocomplete functionality for Drupal link interfaces. Linkit supports nodes, users, taxonomy, files/media, and basic support for all types of entities that define a canonical link template.