Screenhero engineer here, and currently working with CoScreen. TBH, Tuple adn Screen both seek to re-create Screenhero (and do an amazing job of that!) CoScreen, while using similar technology, has completely rethought the UI from the ground up, and is a huge step forward that the others are going to have a hard time catching up with. Instead of one person sharing their screen, with CoScreen, each participant can share individual windows into a shared environment that feels as natural as native windows. It's a fundamentally different vision for how to do remote collaboration.
First, as employee number one at Screenhero…thank you for the kind words :D I'm immensely proud of the tech we built there.
Second, if you liked Screenhero, you're going to love CoScreen. Instead of sharing one computer's entire desktop, CoScreen lets each participant share their own windows onto everyone else's computer, effectively creating a shared desktop. It's pretty magical.
Screenhero founding engineer here. I've been working with the CoScreen team for a few months now, and I am incredibly impressed with the product and the team. They've taken our idea and really pushed it forward—it's not collaborative screen sharing anymore, it's a shared desktop which anyone can drop a window onto. (I'm only a little embarrassed we didn't imagine this UX back in 2013).
If you've never used something like this before, think back to a Zoom call you've had recently where someone else was sharing their screen, and you really wish you could have just driven for a moment instead of dictating instructions. Or just shared a window on your own desktop to illustrate a point. CoScreen lets you do all of this seamlessly.
Founding engineer at Screenhero here. Can easily recommend CoScreen as an amazing tool for remote collaboration. The funding is certainly worth celebrating (runway!) but the big news for me is the Windows release—I'm excited to start using CoScreen with my non-Mac colleagues at last!