Thanks,Here is one, there are a number of them
Online Ladder Logic Simulator: Learn & practice PLC programming!
Online PLC Simulator: Master Ladder Logic programming with an interactive tool for creating, learning & sharing ladder logic diagrams. Elevate your PLC skills!app.plcsimulator.online
I am using this one for quick examples.
PLC Fiddle
The online ladder logic simulator for testing, training, and code sharing. Try it today!
www.plcfiddle.com