StarUML - StarUML
Omegle - Omegle is one of the most popular online chat website allowing user to communicate with anyone without registration.
draw.io - Online diagramming application
LuckyCrush - Live random video chat
UMLet - UMLet - Free UML Tool for Fast UML Diagrams
Bazoocam - Bazoocam is a popular chat website that rapidly connects you with strangers to chat.