Kauna vs Plane9

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.

Plane9 is a free Windows 3D music visualizer and sound-responsive screensaver. It can run in a standalone window, as a screensaver, or as a VR visualizer, with OpenVR/HTC Vive and Oculus Rift support listed. The software offers 250 scenes that can be combined into more than 10,000 views, plus 39 transition scenes. It reacts to audio from computer sources such as Spotify and iTunes and can analyze sound from recording devices. Multiple monitors are supported, and analysis can use up to 18 speakers. A studio application records videos from the visualizer, and video export is available. Plane9 is listed at free for Windows 7, 8, 8.1 and 10. It requires an OpenGL 3.3-capable graphics card; the FAQ recommends a recent OpenGL 4.0 or newer card. Audio analysis does not work with unprocessed digital audio such as DTS. Commercial use of scenes and generated content requires a commercial-use license.