Too manyplugins.Anyway.

Wow gives you slow warble, fast flutter and drift through clean playback-speed modulation. A lot of wow plug-ins use inexpensive interpolation, which can fold extra tones into the signal as playback speed moves. Wow uses rate-aware windowed-sinc resampling to keep aliasing down and high frequencies clear as the pitch moves.

It is free and runs natively on Linux, macOS and Windows. You do not need to pay $99 for another wow plug-in or route it through yabridge.