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LCT — LiveCaptions Translator

Real-time speech-to-text captioning with on-the-fly AI translation, available as native apps for Windows and macOS.

LCT listens to live audio (system playback or microphone), transcribes it, and streams a translation alongside the original — useful for following talks, meetings, videos, or calls across a language barrier.

Platforms

Platform Stack Status Docs
Windows C# / .NET 8 (WPF) + LiveCaptions Stable windows/README.md
macOS SwiftUI + SFSpeechRecognizer + local LLM (Ollama) Active development macos/README.md

The two apps are independent codebases tuned to each platform's native speech and UI frameworks. They share this repository for common documentation, translation benchmarks, and a single issue/release home.

Repository layout

.
├── windows/      # Windows app (.NET solution, source, installer scripts)
├── macos/        # macOS app (Swift Package, SwiftUI)
├── benchmark/    # Cross-platform translation-quality benchmarks
├── docs/         # Shared / macOS user documentation
└── .github/      # CI workflows (per-platform, path-filtered)

Building

  • Windows — open windows/LiveCaptionsTranslator.sln in Visual Studio, or dotnet build inside windows/. See windows/README.md.
  • macOS — cd macos && ./package-app.sh (or swift build). Requires macOS 15+ and a local Ollama install. See macos/README.md.

License

See LICENSE. Applies to both platform apps.