With PhoneBeamer you can present your phones screen in a browser simply by scanning a QR Code. And your phones-screen doesn't get published to the whole internet - just in your local network, because the internet-website is only a broker between your local browser and your phone. Your phone and your browser only needs to be in the same network - like the same wifi. Then you can watch the screen on your own or present it to others via Skype, WebEx, or more using a traditional video projector. On the website, you can switch to full-screen-mode and even download screenshots. You can use it in nearly Browser on a PC, Mac, Tablet or even another smartphone.
||Android 5 and later