reTuner
reTuner is an open-source audio pitch shifter plugin that converts music between tuning standards (A440, A432, etc.) with professional quality. Powered by the Rubber Band Library, this cross-platform plugin (VST3, LV2, CLAP, AU) delivers artifact-free pitch shifting while preserving audio character. Perfect for musicians, producers, and wellness content creators. Includes standalone app with file export. GPL-3.0 licensed with free lifetime updates.