Beatzille

Beat Magazine's Beatzille is a less powerful, feature-limited version of U-He’s commercial Bazille virtual instrument. It features fewer oscillators, filters, effects and modulation sources than the full version and it also doesn’t feature voice stacking. On the other hand, Beatzille’s reduced feature set results in a lower overall CPU usage, which can actually be quite helpful for users with lower end computers.
Beatzille is available for free download via Beat Magazine’s Facebook page 

http://ow.ly/XGnj305hL5u

Full Bucket Music

Synths:

• Ragnarök (Power synth)
• Nabla (KORG Delta DL-50 Strings Synthesizer)
• the Deputy (classic string machines and early "polyphonic" synthesizers)
• Kern (polyphonic software synthesizer to be fully controlled by modern MIDI keyboard controllers)
• The scroo (spectral formant synthesis ) 
• Mono/Poly ( classic KORG Mono/Poly)
• The bloo (classic subtractive synthesis)
• Frequency Shifter (effect)

http://www.fullbucket.de/music/vst.html

Brandulator

the new free plugin «Brandulator» of its own design that creates a special audio effect with a unique sound that is similar to the flanger, vocoder and the harmonizer, but has a different operating principle, in which the input signal is branched into three channels is adapted comb filters, tone their settings can be changed to 16th times per bar.
The effect also functions as a kind of arpeggiator that operates synchronously with the DAW, so the detailed design should have an appropriate time signature, although it is not required. Tonal settings of each channel can be set either manually using the controls, and accident in accordance with a predetermined harmonic law selected from the list, numbering about three hundred different harmonies. Randomization of tones can be performed either manually or automatically at the beginning of each bar 1,2,3..8.

http://www.kvraudio.com/forum/viewtopic.php?f=6&t=471245

Beatmaker SL Drums

SL Drums 2 is a free VST drum machine, which with a single panel in the purest style drum-pad lets you create beats a fast and uncomplicated configuration. 8 pads to launch your rhythms, each with its own volume control, pan and release, SL Drums 2 is perfect for capturing ideas immediately.

• 59 standard stereo kits and 59 multi-outs.
• 44 new kits produced by Coldman Beats.
• 450+ drum samples.
• Each pad has its own volume controls, pan and release. Volume, pitch and reverb style analog overall effect (not including reverb in multi-out).
• Ultra low CPU usage.

https://beatmaker.xyz/plugins/

Over Diver od82o

VST overdrive called "Over Diver od82o".

Basic features:
•64-bit internal processing;
•16x/8x/no oversampling;
•symmetrical/asymmetrical clipping;
•stereo processing;
•high/low quality processing;
•64/32-bit versions (Windows only).


http://www.kvraudio.com/forum/viewtopic.php?p=6580879

iZotope Neutrino

Spectral shaping

Neutrino can be used to to reveal subtle amounts of detail that can elevate great mixes to a new level of refinement, say iZotope. The user can add balance and focus to their mixes by applying it to every track or the major mix buses (just like analog summing or console emulations).

1. Neutrino includes 4 modes, tailored to specific instrument types: 
2. Voice: Adds clarity and detail to help vocals sit on top of the mix. 
3. Instrument: Preserves the authentic character of the instrument. 
4. Bass: Adds punch and weight to electric, acoustic, and synth basses. 
5. Drums: Emphasizes transient detail to avoid "muddy" mixes. 

https://www.izotope.com/en/products/mix/neutrino.html

Voxengo MSED

Voxengo MSED 3.0, a free audio encoder-decoder plugin for mid-side processing.

MSED is able to encode (split) the incoming stereo signal into two components: mid-side pair, and vice versa: decode mid-side signal pair into stereo signal. MSED is also able to work in the "inline" mode with the ability to adjust mid and side channels' gain and panning without the need of using two plugin instances in sequence. MSED can be used to flip the phase of the mid and side channels by 180 degrees, and swap the stereo channels, and to extract the mid or side channel.
MSED features the "plasma" vector scope, stereo correlation and balance meters which make it easier to monitor the stereo information present in the audio signal.

http://www.voxengo.com/product/msed/

RAS Vintage synth collection

Roberson Audio Synthesizers  Vintage Synth Collection

RA Mowg is an emulation of a Moog Minimoog Model D.
An instrument that not only resembles the Minimoog in appearance, but delivers the same feel while playing. From the deep, full-bodied filters, to the mellow analog-style oscillators, to the distortive drive from feedback-looping the output, this instrument can give you the feeling of playing a Minimoog.

Oddy-Free is an emulation of an Arp Odyssey Mk.II - much attention to detail was given in the layout of the signal path to have it behave as accurately as possible. It does have just a touch more umph than most originals would - this particular emulation was based on the "illegal" filter versions based on Moog's -24dB Low-Pass filter, so it sounds quite a bit smoother and richer but at the same it can produce the harsh metallic tones known from the Odyssey.

Prophanity is an emulation of a Sequential Circuits Prophet 5. Much time was given for attention to detail in nearly every aspect of the instrument, and most every subtlety has been accounted for.

The Mini-Vyn is an original virtual analog/subtractive design, entered as a competition piece for KVR Audio's Developer Competition circa 2006. With the ability to be monophonic as well as polyphonic (and possessing a slightly different tonal quality between the modes), the Mini-Vyn is also an incredibly flexible "bread-and-butter" VA. To set it truly apart, the instrument has a feedback-overdrive circuit of original Roberson Audio design that gives the filter a rich and organic sound when pushed to the extreme.

TerVoxSyn is Roberson Audio Synthesizer's very own Theremin emulation. A very special filter model was designed to accurately capture the voice-like sound of a true tube-type Theremin.

http://www.robersonaudio.com/vintage-synth-collection.html