TightProjector: Real-Time Screen Broadcasting over LAN Without Extra Hardware
General Overview
TightProjector is built for one specific task: broadcasting a Windows screen to multiple viewers over a local network, in real time, without needing extra AV equipment. It’s not a remote desktop tool. It’s not a streaming platform. It’s more like a screen multicast engine — focused, lightweight, and LAN-native.
The typical use case? Classrooms, trainings, or internal meetings where one machine needs to show its screen to several others without internet dependency or HDMI splitters.
It runs without fuss. Install it, start the sender, launch the viewer on target PCs, and the screen content shows up within a second or two — compressed, synchronized, and locked to the LAN.
Capabilities and Features
| Feature | Description |
| Screen Broadcasting | Sends full-screen or selected window content over UDP multicast |
| Real-Time Viewing | Latency between 0.5 and 2 seconds on most LANs |
| Multicast Support | Optimized for networks with multicast routing (no per-viewer overhead) |
| Viewer Application | Lightweight receiver app for Windows (no admin rights required) |
| Audio Streaming | Sends system audio along with video (Pro version only) |
| Access Control | Can restrict viewing to specific IP ranges or password |
| Compression Engine | Reduces network load using JPEG-like compression |
| Scheduled Transmission | Automates start/stop based on schedule or scripts |
| Autostart Options | Can launch at login or in unattended mode |
| No Internet Required | 100% local operation — does not rely on cloud or external servers |
Deployment Notes
– Works only on Windows (7, 10, 11, Server editions)
– No installation required for viewer — just run the .exe
– Requires multicast routing if used across VLANs or routed subnets
– Audio streaming available in Pro version only
– Recommended for use in switched Ethernet environments (Wi-Fi may lag)
– Configuration stored locally — supports .ini and .bat automation
– Can run from USB stick or mapped network share for quick deployment
Usage Scenarios
– Projecting a teacher’s screen to 30+ student PCs in a computer lab
– Broadcasting a presentation during a corporate training session
– Replacing physical projector use in environments with individual terminals
– Centralized visual monitoring across air-gapped or offline networks
– Showing visual dashboards on multiple passive endpoints (e.g., factory floor)
– Temporary multicast info display in classrooms, events, or live tests
Limitations
– Windows-only; no native macOS or Linux support
– Unidirectional — viewers can’t interact or send input
– No file transfer, clipboard sync, or remote control features
– No recording function in free version
– Viewers need to be manually launched unless pre-scripted
– Works best on LANs; less reliable over Wi-Fi or VPN without tuning
Comparison Table
| Tool | Focus | Compared to TightProjector |
| VNC | Remote desktop sharing | Bi-directional and heavier; TightProjector is one-way and lighter |
| Zoom Share | Cloud screen sharing | Requires internet and accounts; TightProjector is LAN-only |
| OBS Studio | Screen streaming | Powerful, but complex and overkill for LAN-only display |
| AirServer | Wireless mirroring | Good for mobile devices; TightProjector is better for PCs |
| ScreenTask | HTTP-based screen share | Slower, uses polling; TightProjector is faster with multicast |
