A few weeks ago, at Hammeting 2017, I bought a KiwiSDR from ChrisTech. A KiwiSDR is a software-defined radio covering 10kHz to 32Mhz (I have mine set to 30Mhz).
The KiwiSDR allows you connect to it over the Internet and listen to short wave transmissions through your web browser from anywhere in the world. Up to 4 users can listen simultaneously to any frequency in the 0-30Mhz range. Each user can tune independently.
I love this little gadget, and have played with it daily for a couple of weeks now, and are now looking for a remote (noiseless) QTH for it.
If you want to try it, you can click here.