There are a bunch of whiteboards out there you can use to collaborate with your colleagues or to use with your students. There is Padlet, Wakelet, Google Docs, OneNote and more. However, when I saw that Lucid had created their own whiteboard collaboration website I was excited.
For those of you who are not familiar with Lucid they make some great web based applications. Lucidchart (for flow charts and the like) Lucidpress (for dynamic web publications that look exceptional).
I really like what they make and I find their products to be simple yet powerful and most of all effective. This is why I was so excited and let me tell you, Lucid did not disappoint.