ui-router

Models applications as a tree of states, enabling organized navigation flows with parent-child relationships, as emphasized in the README's focus on hierarchical management.

Uses a finite-state machine to manage transitions in a controlled, transaction-like manner, providing reliability for complex app navigation.

Allows bookmarking and direct access to specific states deep within the SPA, enhancing user experience with URL-driven navigation.

Automatically updates the browser URL during navigation and drives app state from URL changes, ensuring consistent state representation as highlighted in the features.