You could try https://logic.ly/demo/ https://logic.ly/demo/ or the much older http://www.shsu.edu/csc_tjm/fall2003/cs272/dworks_howto.html http://www.shsu.edu/c

You could try https://logic.ly/demo/ https://logic.ly/demo/ or the much older http://www.shsu.edu/csc_tjm/fall2003/cs272/dworks_howto.html http://www.shsu.edu/csc_tjm/fall2003/cs272/dworks_howto.html