TightProjector — Screen Broadcasting over a Local Network
What it is
TightProjector is a small utility designed for one thing: sending the screen of a PC over the local network so others can see it in real time. It’s not remote control software, not a VNC server — it’s closer to a one-way broadcast. The tool has been used in classrooms, training rooms, and even in meeting spaces where a single presenter needs to share content quickly without cables or projectors.
How it works
The program captures the desktop of the source machine, compresses the video stream, and sends it over UDP multicast or unicast. Other PCs on the LAN run the TightProjector Viewer to display the broadcast. Since it uses standard network transport, dozens of clients can watch the stream at the same time with relatively low load on the sender. Audio can be transmitted too, though quality depends on network stability.
Technical profile
| Area | Details |
| Purpose | Screen broadcast over LAN |
| Platforms | Windows (sender and viewer) |
| Protocol | UDP multicast/unicast |
| Features | Desktop broadcast, audio support, password protection, logging |
| Auth | Basic password protection |
| Security | LAN-only by design, limited controls |
| License | Commercial (with demo version) |
| Deployment | Install on presenter PC and viewers |
Why admins look at it
No cables, no special hardware — just the network. Simple setup for classrooms and meeting rooms. Can push one screen to dozens of viewers at once. Works over standard LAN, no fancy infrastructure.
Usage scenarios
– Teachers broadcasting their desktop to student PCs during lessons.
– Corporate training where the instructor shares screen with all participants.
– Temporary setups in conference rooms without projectors.
– IT teams showing a live demo on multiple machines at the same time.
Security notes
Security is minimal. Passwords can be set, but traffic is not end-to-end encrypted. It’s best used in trusted LAN environments, not across the internet. For sensitive material, additional network controls (VLANs, isolation) are recommended.
Limitations
Windows-only. No remote control — viewing only. Weak security compared to modern remote tools. Depends heavily on LAN quality; weak Wi-Fi can cause stutter.
Comparison snapshot
| Tool | Strengths | Best fit |
| TightProjector | Broadcast one screen to many PCs | Classrooms, training rooms |
| VNC/RealVNC | Full remote desktop control | Admin and support tasks |
| Zoom/Teams share | Cloud-based, collaboration features | Remote teams over internet |
| Miracast | Wireless screen sharing | Small groups, ad hoc use |
Minimal checklist
– Install TightProjector on presenter PC.
– Configure broadcast mode (multicast/unicast).
– Optionally set a password.
– Install TightProjector Viewer on all audience PCs.
– Run the session and monitor performance.