Free browser base UML modelling tool

https://www.draw.io/

How many kind of UML diagrams in total?

Class Diagram
Component Diagram
Deployment Diagram
Object Diagram
Package Diagram
Profile Diagram
Composite Structure Diagram
Use Case Diagram
Activity Diagram
State Machine Diagram
Sequence Diagram
Communication Diagram
Interaction Overview Diagram
Timing Diagram

http://creately.com/blog/diagrams/uml-diagram-types-examples