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LANCast

View-only screen sharing on your private local network.

Utilities · John Lerry Taruc · Updated Nov 1, 2026

  • Windows
  • Ubuntu/Linux

Screenshots

  • Join a session or host your own.
  • The viewer is view-only, with fit, zoom and fullscreen. Shown with a test window.
  • Find sessions on your LAN, or connect by IP address.

Overview

LANCast shares a screen with named viewers on the same private LAN, which suits classrooms and small rooms. Hosts open a lobby, approve who joins and choose when to start broadcasting. There is no internet account, remote input, microphone, camera, recording, file transfer or telemetry.

Features

  • Stays on your LAN

    You pick a physical private network adapter, and sessions use only that network.

  • Hosts stay in control

    Viewers ask to join and wait for approval. You preview the source first, then start, pause, stop or end the broadcast yourself.

  • View-only for viewers

    Viewers cannot reach the host’s keyboard, mouse, clipboard or files.

  • Check who you connect to

    Viewers compare the host’s full fingerprint over a separate channel before approving it.

  • Attendance records

    Session history stays on the host computer and can be exported as a CSV file.

  • Host or viewer installs

    Install both roles together, or a viewer-only edition that cannot host.

Requirements and installation

For Windows · x64 · Host & viewer EXE

System requirements

  • Windows 10 or 11, 64-bit
  • Ethernet or Wi-Fi on a private network. VPNs and virtual adapters are not eligible.
  • To host: viewers must be able to reach TCP port 47100 on this computer

Installation

  1. Open the setup file and choose an install folder.
  2. Open LANCast from the Start menu.
  3. This installer is not code-signed, so Windows may show a warning.

Release notes

  1. Version 0.2.10 Nov 1, 2026

    • Ubuntu: fixed compact-window controls, pointer-mode negotiation, resize recovery and PipeWire window cropping.

  2. Version 0.2.8 Nov 1, 2026

    • Added protocol hardening, including limits on control-message floods and clearer compatibility errors.

  3. Version 0.2.7 Nov 1, 2026

    • Hardened attendance storage, CSV export, retention and crash recovery.

Built with

  • Rust
  • Iced
  • GStreamer
  • WebRTC
  • SQLite

More information

  • License: MIT

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