Important: The js part of lucca-ui is an angular framework so is obviously dependent on angular. It also uses moment.js for its manipulation of dates as moment.js is super awesome. It also uses underscore.js, which is a Javascript library providing very useful helpers (especially for arrays and collections).
The luid-user-picker directive depends on AngularJS ui-select because it offers a large set of customizable features.

The exact list of dependencies which can be found in the bower.json file is:

• lucca-icons {{ dependencies.icons }}
• angular {{ dependencies.angular }}
• angular ui bootstrap {{ dependencies.nguibs }}
• momentjs {{ dependencies.moment }}
• underscorejs {{ dependencies.underscore }}
• ui-select {{ dependencies.uiselect }}
• angular translate {{ dependencies.translate }}
• angular notify {{ dependencies.notify }}
• ui-cropper {{ dependencies.crop }}