Freeware - OrilRiver Reverb VST Plug-in

http://www.kvraudio.com/product/orilriver-by-denis-tihanov

OrilRiver is a free algorithmic reverberation plugin available in VST2 and VST3 format for any Windows (in the future it is planned to develop for Mac). With this plugin it is possible to simulate the reverberation of a small room and great hall.