Are there other tools that can help us?

A new development on the internet is web browser-based conferencing and collaboration platforms that provide real-time visual communication without the need for downloading or installing additional software. An example of a free tool that supports this is Vyew. In addition to allowing shared viewing of presentations, files, photos and even a participant’s desktop in real-time, there are also tools for whiteboarding, annotating, text chatting, and phone conferencing.

Further reading: Wikipedia