If you miss the physical act of writing on a whiteboard, then I would suggest looking into getting a drawing tablet (which you can use with any collaborative whiteboard app, or just screenshare a regular drawing program if you don't need to collaborate).

You can get an entry-level Wacom for < $100, and it scratches the whiteboarding itch for me in a lot of situations.

I got one just for that reason, what about the whiteboard software though?

What's wrong with Google docs or any of the myriad online whiteboard apps?

Unless you’ve mastered one of those tools, it’s impossible to match the fluidity of thought to text or visualization that a standard whiteboard provides you.

I’m also not convinced that there is a tool that when mastered can provide the same fluidity, but I can claim that, and to the contrary I’d love a recommendation.

I’ve been trying to build a really simple only boxes and arrows whiteboard at https://whiteboard.systems

It’s definitely not the same as drawing on a whiteboard, but I’ve found it useful for explaining abstractions.

What is there to master? It's drawing or typing on a board.

Not to mention the simplicity of a chalk/marker and a board.

The ability to callously walk up to the whiteboard and erase what your coworker was doing and telling him to go back to his cube and repent for his sins is also sorely missed

I'm admittedly not a developer but I used to think that the lack of expansive whiteboards was one of the real failings of remote communication. And it still can be. But I've also find that shared Google Docs work better in a lot of situations than whiteboards and post-its all over the place in a big conference room.

(That said, if whiteboards are important to a team, I would imagine there's software for sharing tablet drawing. I've heard there is. I just haven't investigated.)

I have a whiteboard and web cam