Kauna vs Radiance

Kauna is a free Windows music visualizer that turns system audio into animated displays and can also capture sound from a microphone. Its visualizations include Wave, which draws frequencies as fine lines; Confetti, where colored discs change size; and Bars, described as a rainbow spectrum analyzer. The listed choices also include Burning clouds, Plasma, Sound level meter, and Triangular visualizations. Burning clouds depicts illuminated clouds, while Plasma uses smooth color transitions. Sound level meter acts as a virtual device for measuring volume in decibels. Kauna provides a sound-level sensitivity control, lets users select the sound card, and can switch visualizations automatically on a timer. The Microsoft Store lists the software as free and notes that it offers in-app purchases. The available platform information describes Kauna as desktop software for Windows.

Radiance is free, open-source video art software for live performance, including VJ work. It runs on Linux, macOS, and Windows. Performers can work with more than 150 GPU-accelerated WGSL effects and edit them live. MPV integration opens video clips, images, files, webcams, live streams, and YouTube videos. Beat detection uses incoming audio as a shared time reference for effects. Radiance can send output to one or more screens and includes a projection mapping editor. The software is released under the MIT/X11 License. YouTube videos loaded by URL require yt-dlp to be installed separately. Building from source requires Rust, Cargo, and dynamically linked libmpv. The project README notes that MIDI controller input and TCP output for LED displays are absent from the rewrite compared with version 0.6.1. Radiance is listed at free.