Thank you for both your recommendation. I would definitely try them.
But both of the two requires internet connection, while my environment is LAN. So I'd like to welcome someone to recommend a software for LAN desktop sharing, no need of internet connection. Thanks.
Do you really want to share the desktop to 100 of users or just stream a video of what you are doing?
If you really want to share your desktop with 100 of users, I think it will be a nightmarish experience of controlling the mouse and happenings of screen!!
Hey buddy, you can use VNC for this purpose, but its not free. But its a very good software.
VNC is a P2P software, it's not suitable for meeting that have lot's of panticipants.
Hey. I have tried using Mikogo and it is one of the best web conferencing tools I have ever used to conduct online meetings. In addition to mikogo, I have even tried using WebEx, gomeetnow; gotomeeting etc. and they are good as well. Alternatively, there is another web conferencing technology i.e. appliance based model such as RHUB appliances. Deployment of RHUB appliances is only a onetime cost and there is no hassle of monthly payments as compared to hosted services.
If you only need to broadcast your screen, then you can use
Open Broadcaster Software + a website like Twitch.tv
(this will also record the share)
If you would additionally like to give the other user control,
Adobe ConnectNow (browser based)