Special thanks to Dave from http://pegasuscreations.com/for sending these in.
I liked this plug as it gives you TONS of features, and you can have other calendars feed into one calendar (think churches or business with multiple departments). Check out the video
For more information go to time.ly
Where time.ly is a great tool it is a plugin for WordPress. Tockify is a stand alone. It seems to ahve many of the same features (their website didn't seem quite as slick). It is free and has a lot of features as well. you end up with a tockify web address. You can embed the calendar or have it act like a pop up when people click on the button. This is again impressive for free. Check it out at tockify.com