I use all of these at one time or another for delay:
Audio Damage • Ratshack Reverb
Audio Damage • Replicant
dB (Quantum FX) • Analog Dual Delay
dB • Hair Delay
dB • Pipe Delay
dB • QFX Ambient Pads
dB • QFX Flanger Delay
dB • QFX Loadza Filters
dB • QFX Sweep Delay 2
dB • QFX Sweeping Overdrive
dB • QFXQ Delay
dB • Re-Arrange
dB • Vintage Delay
dB • Vintage DirtDelay
GSi • WatKat (free, in combination with a gate or it lingers)
Line 6 • Pod Farm (internal delay modules)
Logic • RingShifter, Echo, and other built-in ones of course
Luxonix • LFX-1310 (free)
MDSP • Analog Delay
MDSP • Fire
Michael Norris • Spectral Granulation (free)
Michael Norris • Spectral Stretch (free)
Michael Norris • Spectral Tracing (free)
NI • Guitar Rig
NI • Reaktor5 FX
NI • Spektral Delay
Ohm • Hematohm
Ohm • Ohm Boyz
Pluggo •Â Average Injector (free)
Pluggo • FilterTaps (on buss) (free)
Pluggo • Resonation (free)
PSP • 42
PSP • 84
PSP • 608
PSP • Nitro
TAL • DUB (free)
Tone2 • Warmverb
U-He • Uhbik-D (delay)
UA • CS-1 (Channel Strip)
UA • DM-1 (Delay Modulator)
Valhalla • FreqEcho (free)
Waldorf • D-Pole (free)