Windows/Mac: Join.Me is a free tool from the creators of LogMeIn. Download the app, run it, share the URL with a friend and you've got nearly instant screen sharing with text chat, voice conferencing, mouse sharing and more.
Last year we shared LogMeIn Express with you. Since then, LogMeIn has rebuilt the project, improved compression, added features and made it even easier to share your screen with friends and coworkers.
Visit Join.me, click the share button to grab a copy of the software, run the software and share the link. Your friends or coworkers visit the link and they're instantly connected through their web browser into the sharing session. There they can chat with you, share your mouse (if you allow it), call into a free conference call number so you can all voice chat while watching the demonstration on the shared screen, and even share files with each other.
Based on our testing with Windows 7, we'd suggest minimising or closing all windows that aren't important to the demonstration you're giving. When we had dozens of windows layered, Join.me tended to flicker while briefly showing glimpses of the background windows. Once we minimised or closed them, the flickering ceased. Other than that the only complaint we can log against the app is that we'd prefer even a simplistic verification process when the viewers connect in. Even a four-digit pin would make us feel better about the URL essentially being wide open (each Join.me session is assigned a ###-###-### style identification code).
That said, it performed as expected and with minimum fuss. One click to run the app, another click to share the URL with our testers and we were up and running. Have a favourite tool for simple screen sharing? Let's hear about it in the comments. Join.me server software is available for Windows and Mac OS X, anyone with a modern browser can connect in as a client to view the session. Thanks Mutant!