From KVR forum:
"Hi there, we've just released a preview version of some of the plug-ins that are a part of REAPER, but in standalone form. We've tested with a few other hosts, but these definitely need a bit of testing.
Here they are:
ReaGate: a very configurable gate with wet/dry controls, lookahead (on hosts that support PDC), hysteresis, hold, noise generator, MIDI event sending (on hosts that support it), built-in filtering sidechain as well as supporting sidechain inputs, and more.
ReaComp: a compressor that has a lot of controls (wet/dry/pre-comp/sidechain/knee) Also has a program dependent auto-release mode..
ReaFir: a FFT-based EQ/dynamics processor/noise removal/analysis plug-in. ReaFir can do a lot of types of processing, from standard linear FIR-based EQ, to noise signature detection and removal to per-band compression and gating."
http://reaper.fm/files/reaplugs.zip