Valhalla Space Modulator: Multi-Algorithm Flanger Plugin (VST/AU/AAX)

ValhallaSpaceModulator is a free flanger plugin featuring eleven distinct algorithms for through-zero flanging, barberpole flanging, detuning, doubling, echoes, and reverb effects.
Compatible with Windows 7-11 (64-bit) and macOS 10.9 through Sonoma, supporting both Intel and Apple Silicon processors. Available formats include VST2.4, VST3, AAX, and AU (Mac only).
The plugin includes a self-documenting interface with hover tooltips for parameter explanations. Latest versions (1.2.8 Mac/1.1.6 Windows) feature signed installers and native support for all current Mac processors.