keypatcher.

A modern alternative to Apple MainStage.

Built in Rust for live performance on macOS, Windows, and Linux. Designed for the one place software can't fail — the stage.

The same show file runs natively on macOS, Windows, and Linux. Move between studio and pit with no conversion step.

Rust audio engine. Sandboxed plugin processes. Hot-failover to a backup machine in milliseconds if something does go wrong.

Bring your existing concerts across intact — patches, layers, and mappings preserved. No rebuild required.

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