I'm looking for a specific component for Angular, something that works in a similar way of Bootstrap Tags Input
Can anyone help me finding a out-of-the-box component or providing some example of implementation? I need it for Angular 4
TL;DR In Angular, that type of component is named chip. Change your keyword and you will find better results.
There are many ways to reach it, the most common is through Angular Material.
Firstly, install Angular Material in your project following the official tutorial. Luckily it is well written and I don't think you are going to have problems.
Then, import MatChipsModule in the component you want to see the tags, in this way:
import {MatChipsModule} from '@angular/material';
and finally you can use the component in your template:
<mat-chip-list>
<mat-chip *ngFor="let i of items" [selectable]="selectable"
[removable]="removable" (remove)="remove(i)">
{{i.tagName}}
<mat-icon matChipRemove *ngIf="removable">cancel</mat-icon>
</mat-chip>
</mat-chip-list>
Source: https://material.angular.io/components/chips/overview