| FFmpeg | GPL v3 | Renders and checks every video. Bundled as a separate program, unchanged. Its source code is available from ffmpeg.org; ask support for the exact version’s source. |
| whisper.cpp and the Whisper base model | MIT | Offline captions. Downloaded only when you turn them on in Settings, from the official whisper.cpp release and model page, and checked before use. |
| Electron and Chromium | MIT and BSD-style | The app window and its built-in browser. |
| React, Zustand, Lucide icons, Tailwind CSS | MIT and ISC | The screens. |
| Fredoka, Manrope, Lilita One, Bangers, Anton, Bebas Neue, Archivo Black, Titan One, Bungee, Righteous, Rubik Mono One, Patrick Hand and Caveat Brush fonts | SIL Open Font License 1.1 | Headlines, captions and text. Each font’s licence is in the app’s licenses folder. |
| This website | SIL Open Font License 1.1, ISC | Fredoka, Manrope and Geist Mono fonts served from this site (Fredoka, Manrope, Geist Mono), Lucide icons (ISC), and NASA photos in the demo video (public domain). |
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