Download Classic Flanger:

Subtle guitar flanger VST

The free Classic Flanger by Kjaerhus Audio will give your guitars that subtle and highly sought-after swirling effect. Due to a tightly controlled feedback path, it is possible to boost the flanging effect to maximum without getting unwanted side effects. The Classic Flanger plugin features host synchronization, stereo spread and it supports sampling rates up to 96kHz. With a sound that resembles the old Boss HF-2 flanger unit, the Clasic Flangerwill give your guitar the true mid 80's sound in no time!