More music, less talk :

1. Knufinke SIR1 reverb plugin

Before we dive into the best free reverb vst plugin, let me briefly explain what a reverb effect does, you can skip this section if you aren’t new to reverb effects. Reverb is the simulation of the sound of space. This space could be your bathroom, a small room, concert hall, chamber and so on. For example, the sound is different when you. From bright, nearly slap-back echo, to elongated cavernous rumbles, this first partnership between Acon Digital and Reverb.com brings an entirely new ambience to your tracks. With just one knob, you can dial in short, bright reverb for a small room, up-front vibe, or long, dark reverb that places.

More info and free download @ http://www.knufinke.de/sir/sir1.php

The well known free convolution VST reverb. Convolution reverb is a processing plugin that need an impulse response file. Impulse response is the response of a dynamic system when this system is feeded with an impulse. This gives (an approximation of) the transfer function of the system, the system can be a reverb unit, an open space, a room , etc.

The signal we send to the plugin is convolved with the transfer function of the system : the output is “like if we sent this signal in the modelized system)

The SIR1 reverb comes with two impulse response example, but of course you’ll need more than two impulse response files to cover a large variety of reverb (plate, spring reverb, cathedral, stadium, natural spaces, theater, small room, big room, etc.)

Magic of the internet ! you can find impulse response files ! and for free
Some nice free Impulse Response IR files can be found there :

http://www.openairlib.net/auralizationdb
http://www.samplicity.com/bricasti-m7-impulse-responses/
http://rhythminmind.net/STN/?page_id=4188
http://www.grgr.de/IR/files/

2. Magnus Ambience Reverb

Ambience free reverb VST

more information and download @ http://magnus.smartelectronix.com/#Ambience

This one is an algorithmic VST reverb, it sounds nice, has a fresh and intuitive GUI : try it !!
We like the gate section, with little tweaks you can try to achieve that Phil Collins snare sound
gated reverb !!
The plugin comes with many factory presets, to show the versatility of this reverb.

3. DaSample Glaceverb

Free vocoder vst. More infos and free download @ http://dasample.com/products/glaceverb/

This one is very special, it’s an algorithmic reverb processing VST, but with innovative and unusual algorithms. It tries to emulate the acoustic response of surfaces and materials. So you can try to have the sound of an acoustic space like water.
It can be great for creative effects, and make surreal ambience and great FX! With – nice -metalic sounds. Check the presets => some great presets with name that say it all : Alien Room, Airport, Metal Factory,

4. LiquidSonics’ Reverberate LE

Reverberate LE

Freeware Vst Plugin Reverb Plugin

Synth vst 4 free. More infos and free download @ http://www.liquidsonics.com/software_reverberate_le.htm

https://guysever350.weebly.com/blog/airmail-2-mac-free-download. The light edition of Reverberate, this is a convolution reverb, it’s very good and can load the impulse response file in wav, ogg or flac format.
It comes with various presets & IR files in flac format.

5. SinusWeb FreeverbToo

More information and free download @ http://www.sinusweb.de/freetoo.html

FreeverbToo is a VST reverb plugin based on the Schroeder/Moorer algorithm. There are many implementation of the freeverb algorithm, and this one is one of the best.
The gate section is great and efficient for this gated reverb effects (on snare !)

Here’s the signal flow (picture from the freeverbtoo documentation) :

Free Vst Plugin Reverb

Listen to the reverb

Reverb Vsts

Dry / Wet (Reverberate VST plugins with Cathedral IR)
https://blog.wavosaur.com/wp-content/uploads/2013/10/De-Lacy-Hideaway.mp3https://blog.wavosaur.com/wp-content/uploads/2013/10/De-Lacy-Hideaway-reverb.mp3