You can also synchronise the delay to the tempo with
different resolutions from 1/128 to 1 bar and
control the way the delay-time is interpolated with
the kind of interpolation and the time-constant.
has a tempo-syncable LFO with different waveforms
(triangle, sin, square, triangle exponential,
random...) and a smoothing factor for the waveform,
enabling you to achieve new effects not available
from classic flangers.
Both plug-ins are freeware / donationware.