Denis Tihanov has released OrilRiver 2.0.1, free algorithmic reverberation plugin available in VST2 and VST3 format for any Windows.  
New in v2.0.1: - New graphic interface created by Vitaliy Lytovchenko.
 - Added the modulation block with two parameters:
    - Modulation speed and Modulation depth.
 - Added some new presets.
 - Assembler code for sound processing is more optimized.
 - Added two variation of reverberation and other trivia. 
OrilRiver is a free algorithmic reverberation plugin available in VST2 and VST3 format for any Windows. 
With this plugin it is possible to simulate the reverberation of a small room and great hall.