Broadcast your screen to 50+ student or attendee workstations simultaneously over local Wi-Fi with sub-frame latency and zero CPU strain. Monitor all computers from a central live thumbnail grid. The 100% free, zero-server alternative to Veyon and NetSupport School.
Why educational institutions choose TKR-Cast over expensive server software.
Transmits video packets once; your network switch handles broadcast distribution. Presenter CPU load is identical whether sharing to 2 computers or 60 computers.
View live thumbnail previews of all student workstations on one dashboard. Monitor task progress, identify stuck students, and maintain academic integrity.
Students turning on their PCs late or rejoining mid-lecture receive an immediate keyframe refresh, eliminating frozen screens or black windows.
Click any student thumbnail in the grid to immediately launch an interactive remote control session to help resolve technical errors or guide instruction.
No Linux servers, no Apache/IIS web hosts, and no Active Directory requirements. Just run TKR-Cast on Windows PCs connected to the room router.
Lock all student screens during exams or lectures with one click to command attention and prevent unauthorized web browsing during class hours.
See how TKR-Cast compares to traditional commercial classroom management suites.
| Feature / Metric | TKR-Cast Standalone | Veyon (Open Source) | Commercial NetSupport School |
|---|---|---|---|
| Setup Complexity | ✓ Zero Setup (Portable .EXE) | ⚠ Complex Key Exchanges | ⚠ Server Domain Required |
| Cost & Licensing | ✓ 100% Free Forever | ✓ Free | ✕ Expensive Annual Subscription |
| Streaming Architecture | ✓ True UDP Multicast (Zero Choke) | ⚠ VNC Polling Based | ✓ Proprietary Broadcast |
| Air-Gapped LAN Support | ✓ 100% Offline Native | ✓ Works Offline | ⚠ Cloud Telemetry Licensing |
Everything you need to know about classroom screen broadcasting and lab monitoring.
TKR-Cast uses true UDP Multicast packet transmission. The teacher's PC encodes the video frame only once, and your local network switch hardware replicates the packets to all 50+ student PCs, consuming virtually zero additional CPU or bandwidth.
Yes! Unlike Veyon, which requires complicated certificate authority setups and client services, TKR-Cast is 100% portable. You simply run the .exe and start presenting immediately with zero server setup.
No. TKR-Cast is engineered specifically for air-gapped classroom labs, schools, and enterprise training rooms. It operates 100% offline within your local area network (LAN).
Each student workstation periodically transmits a lightweight preview frame over UDP. The teacher's dashboard organizes these into a real-time thumbnail grid, allowing 1-click remote assistance or screen blanking.
100% Free • Windows 11 / 10 (64-bit) • Authenticode Signed • Classrooms & Labs