# ShareCursor

> A low-latency, open-source software KVM. Share one keyboard, mouse, clipboard and files between macOS and Windows over your LAN, end-to-end encrypted.

- [ShareCursor](https://docs.sharecursor.com/introduction.md): A low-latency, open-source software KVM — move one keyboard, mouse, clipboard and files between macOS and Windows over your LAN, end-to-end encrypted.
- [Download ShareCursor](https://docs.sharecursor.com/download.md): Download the latest ShareCursor for macOS and Windows — free and open source. One keyboard, mouse, clipboard and files across your machines.
- [Quickstart](https://docs.sharecursor.com/quickstart.md): Share your keyboard, mouse, clipboard and files between macOS and Windows in about 60 seconds.
- [Installation](https://docs.sharecursor.com/installation.md): Install ShareCursor on macOS and Windows, and get past the one-time unsigned-app warning.
- [Using ShareCursor](https://docs.sharecursor.com/usage.md): Share your keyboard, mouse, clipboard and files once ShareCursor is installed on both machines — via the app UI or the terminal.
- [Configuration](https://docs.sharecursor.com/configuration.md): Every field in config.toml — settings and the monitor-manager layout that ShareCursor uses to route your cursor between machines.
- [File transfer](https://docs.sharecursor.com/file-transfer.md): Send files between your machines over ShareCursor's reliable, chunked, resumable-by-offset transfer channel.
- [Troubleshooting](https://docs.sharecursor.com/troubleshooting.md): Fixes for the most common ShareCursor setup issues — permissions, authentication, connection and edge-switching problems.
- [Architecture](https://docs.sharecursor.com/concepts/architecture.md): ShareCursor's dual-channel design: UDP for low-latency input, TCP for reliable clipboard and files — and how a keypress reaches the other machine.
- [Wire protocol](https://docs.sharecursor.com/concepts/protocol.md): ShareCursor's two-channel wire format: postcard-encoded input packets over UDP and length-prefixed bulk messages over TCP.
- [Security & cryptography](https://docs.sharecursor.com/concepts/security.md): ShareCursor's WireGuard/Noise-inspired crypto: ephemeral X25519, a pre-shared passphrase, HKDF-SHA256 and ChaCha20-Poly1305 on every channel.
- [Latency](https://docs.sharecursor.com/concepts/latency.md): Where the microseconds actually go — ShareCursor's ~6 µs one-way transport overhead and the design decisions that keep input lag minimal.
- [Development guide](https://docs.sharecursor.com/develop/development.md): Build ShareCursor from source, run the headless test suite, and contribute features while keeping the low-latency hot path clean.
- [Decision log](https://docs.sharecursor.com/develop/decisions.md): Lightweight architecture decision records (ADRs) — the settled 'why' behind ShareCursor's design, so future changes don't re-litigate them.
- [Releasing](https://docs.sharecursor.com/develop/releasing.md): The exact, repeatable process to ship a new ShareCursor version — SemVer policy, the release checklist, and what CI builds.
- [ShareCursor vs. alternatives](https://docs.sharecursor.com/compare/overview.md): How ShareCursor compares to Synergy, ShareMouse, Barrier, Input Leap, Mouse Without Borders and Apple Universal Control.
- [ShareCursor vs Synergy](https://docs.sharecursor.com/compare/vs-synergy.md): A free, open-source Synergy alternative to share mouse, keyboard, clipboard and files between Mac and Windows. Encrypted, low-latency.
- [ShareCursor vs ShareMouse](https://docs.sharecursor.com/compare/vs-sharemouse.md): A free, open-source ShareMouse alternative to share mouse, keyboard, clipboard and files between Mac and Windows. Encrypted, low-latency.
- [ShareCursor vs Barrier](https://docs.sharecursor.com/compare/vs-barrier.md): Barrier is no longer maintained. ShareCursor is a modern, actively developed successor — encrypted by default, with clipboard images, file transfer and zero-config discovery.
- [ShareCursor vs Input Leap](https://docs.sharecursor.com/compare/vs-input-leap.md): A free, open-source Input Leap alternative: encrypted by default, clipboard images, file transfer and mDNS discovery for Mac and Windows.
- [ShareCursor vs Mouse Without Borders](https://docs.sharecursor.com/compare/vs-mouse-without-borders.md): A free, open-source alternative to Mouse Without Borders that also works on Mac. Share mouse, keyboard, clipboard and files between Mac and Windows. Encrypted.
- [ShareCursor vs Universal Control](https://docs.sharecursor.com/compare/vs-universal-control.md): Like Apple Universal Control, but across Mac and Windows. Share one keyboard, mouse, clipboard and files between a Mac and a Windows PC. Free, open source, encrypted.

## Optional

- [GitHub](https://github.com/phun333/ShareCursor)
- [Website](https://sharecursor.com/)