SL532 Console EQ

Based off of the standard EQ module found on a “5000 series” modern console, the SL532 provides the features found on the original hardware. This 3-band EQ is perfect for shaping sounds quickly in your mix. It also includes a “color” circuit that when activated adds a bit of color to the sound that adds an vintage analog feel.

-3-band EQ based off of a modern console
-Fixed 150Hz low shelf filter, variable mid-band from 80Hz to 8KHz, and selectable 8KHz or 16KHz high shelf filter
-Color circuit that adds an vintage analog feel
-Selectable High Pass Filter
-Very CPU efficient

https://smacklabs.wordpress.com/2017/04/10/sl532-console-eq/

SL84 is SmackLabs’ take on the 80 series Neve console EQ. According to the developers, it looks and, more importantly, sounds like the original.

SL84 Console EQ uses impulse responses to capture not just the frequency response of the hardware unit, but also the non-linear quirks such as any dynamic change or sonic distortion that occurs while adjusting the controls. This means the behavior of the EQ will be different depending on the amplitude and other characteristics of the input source.

SL84 has dials for low cut, high cut, low shelf, high shelf, and a mid-frequency band control with optional Hi-Q toggle. The higher Q setting would be useful for more surgical cutting, as opposed to boosting which typically sounds better at a lower Q. The frequency selection points for all of the dials are fixed. The restricted options preserve both the sound and workflow of the original units. The plugin also comes with a bypass button for the filter and EQ for easy A/B comparisons with the original input source.

It promises to be a low-CPU option for an expensive vintage sound.

https://smacklabs.wordpress.com/2017/03/08/sl84-console-eq/

Unlimited Limiter

Sonic Anomaly just released Unlimited, a freeware mastering limiter in 32-bit and 64-bit VST plugin format for Windows-based digital audio workstations.
Unlimited is a high-quality maximizer/limiter effect which supports stereo and 5.1 surround audio material. The plugin features RMS meters and an ITU-R BS.1770 compliant loudness meter for monitoring the signal loudness on the output. It automatically adjusts to the type of audio signal on the input, reducing the overall CPU hit if a stereo signal is detected.

http://sonic.supermaailma.net/plugins

TW-Elong synth

Synth with a very nice sound, 64 presets and lots of ways to edit sounds.
The combined sound of the 3 oscilators go to the amplifier, where you can use 3 envelopes
to create multi-layered sounds. All goes to the filter section with it's own envelope
and LFO. Seperate L/R delay with pre-delay. The sound then goes to the final delay for
even more crazy effects. Also a reverb and an EQ, wich can fatten the bottom end of sounds.
With all the delays on the envelopes and the effect section, it's a great synth to create
unique long sounds, but a lot more is possible.

http://forum.music-society.de/showthread.php?tid=2687&pid=7751#pid7751

Venn Audio utility channel strip

Utility is a free, lightweight, universal general purpose all in one digital channel strip plugin offering precise controls over various aspects of an audio signal, from mid/side processing to soft clipping.

• input routing with separate pans for the left and right channels, or alternatively a pre mono balance control to decide how the left and right channels are blended for conversion into mono
• gain, and individual left and right channel gains, mutes
• pan and phase inversion of either channel
• width control, along with separate mid and side gain sliders and mutes
• maximally flat minimal phase high and low pass 12db/octave filtering
• optional hard and soft clipping at 0db
• everything is fully automatable with sensible parameter ranges/scaling

http://www.vennaudio.com/utility/

HYSTERESIS glitch delay

HYSTERESIS is a FREE glitch delay plugin geared toward creating robotic artifacts and abstract musical malfunctions. Hysteresis features a delay effect with stutter, lowpass filter and modulation effects thrown into the feedback signal path. Process anything from drums and percussion to synth lines and sound effects. On top of being able to create incredibly wild signal mutations, it can also be used to generate classic delay effects.

• Feedback-based delay effect with tempo sync
• Reversible stutter effect in the feedback path
• Lowpass filter in the feedback path
• Modulation with rate division/multiplication
• Over 100 presets from our top sound designers

http://glitchmachines.com/downloads/hysteresis/

Entropy delay

Entropy by CTR is a one of a kind delay plugin! This delay has complete control over delay in each channel separately, but that isn’t what makes this plugin special. Entropy is a stereo cross-over delay. This is a unique type of delay that delays the signal from the left channel and places it in the right, and delays the signal in the right channel and places it in the left. This creates a whole new kind of delay and interesting stereo effects.

• Delay up to 2000 milliseconds.
• Unique Crossover Delay Effect.

http://www.modernmetalproduction.com/product/ctr-entropy-stereo-cross-delay/

SoundHack Delay Bundle

SoundHack Delay Bundle is a group of four plugins derived from the same basic delay algorithm: a hermite interpolated delay line with variable modulation, and a feedback loop with dc blocking and saturation. Pitch shifting is achieved with a dual head crossfading delay (ala Eltro Tempophon/Dennis Gabor/Pierre Schaeffer phonogene) and is decidedly retro. The saturating feedback also allows them to be great drone and noise generators.

http://soundhack.henfast.com/freeware/

Inear Display BOWECHO

BowEcho is a modular sound mangler based on 4 delay lines. It offers a large palette of sound design options thanks to 4 LFOs that can run at control or audio rate, 4 Mixers that can also act as gainers, basic filters, ringmodulators or stereo splitters, and the ability to route the output of each module the way you want.

• 4 delay lines with optional tempo sync.
• 4 “mixers” that can also act as gainers, basic filters, ringmodulators and stereo splitters.
• 4 LFOs with optional tempo sync and the ability to run at audio rate.
• flexible modular routing.
• MIDI learn.
• MIDI program change support.
• Vector based resizable user interface.
• Cross-platform presets.
• 62 factory presets by Ivo Ivanov, Daed and Apparition.
• Lifetime free updates for registered customers.

https://ineardisplay.com/plugins/legacy/

ATK STEREO UNIVERSAL DELAY

ATKStereoUniversalDelay is a stereo delay plugin.

It features knobs to control:

• the delay on the stereo channel (one for each side)
• the amount of blend on each channel (the amount of the feedback loop that goes to the outputs)
• the feedback amount between the delay lines (one to one)
• the feedfoward amount between the delay lines (one to one)

http://www.audio-tk.com/atk-stereo-universal-delay/

XSRDO Patchwork Modular System

XSRDO Patchwork Modular System is a true modular synthesizer.

You can choose what modules you want, where to put them and how many of them you want. Each module is independent of any other and only becomes active when you start to patch them together in your own creative way.

• 36 virtual racks.
• 60 virtual modules.
• Insert any module into any rack.
• Insert multiple modules.
• Movable modules.
• Load & Save preset programs.
• XSRDO Wavetable Maker program included.

http://www.vst4free.com/free_vst.php?plugin=Patchwork_Modular_System&id=2131

VCV virtual modular

Rack

VCV Rack is the engine powering VCV modules. Add modules, connect cables, edit parameters, and save/load patches. Create generative patches with your mouse, perform with your MIDI keyboard controller, or connect it to your favorite DAW using the Rack Bridge VST/AU plugin (coming soon). In Rack, control voltages and audio signals are equivalent, so you can modulate parameters with sonic-range VCOs to create customizable FM synths or chaotic wave-shaping oscillators. If you already own a modular synthesizer, you can enhance your setup with an audio interface supporting CV signals (see [1] [2]) or a CV-MIDI-CV interface module with Rack's CV Interface (coming soon).

Includes the Fundamental plugin pack with 8 high quality analog-modeling sound generators, processors, and utilities.

Audible Instruments

Based on the Mutable Instruments Eurorack modules, Audible Instruments gives you a collection of complex sound generators, modulation sources, sound modifiers, and signal utilities. All modules which are based on real digital modules are ports of their original source code, so generated signals are faithful to the hardware.

E-Series

The E-Series plugin features a port of Synthesis Technology's E340 Cloud Generator, a VCO capable of fat, chaotic, and swarming sound with up to eight combined saw and sine oscillators detunable with a spread parameter and filtered noise.

https://vcvrack.com

Sprike synth

Cognitone has released Sprike v1.0.1, free (open source) virtual analog synth VST.
Sprike is an extended variant of Tunefish4, an open source virtual analog synth originally created by Brain Control. We made sure Sprike cooperates nicely in a mainly MIDI-controlled environment (MIDI sequencers), reorganized preset storage to follow MIDI standards and operating system conventions, added four new MOD sources, and enhanced it with an on-screen keyboard and a slightly changed its look.

http://www.cognitone.com/downloads/item.stml?p=10707

PolyGAS

PolyGAS (Polyphonic Granular Advanced Synthesizer) - the virtual synthesizer of the VSTi format (the VST protocol of version 2.4) providing operation as the connected plug-in to DAW (digital audio workstation), for example, such as: FL Studio, Ableton Live, Sony Acid Pro, Cockos Reaper, PreSonus Studio One, Cakewalk Sonar and others.
This synthesizer is based on a granular method of sound synthesis, allowing to use as much as possible possibilities of this method of synthesis.

• 32-part polyphony.
• Support of files of samples in the WAV and AIFF formats, digit capacity of 8,16,24 and 32 bits / sample, mono / stereo. Files are supported only uncompressed by codecs.
• The editor of the bending parameters of granular synthesis. 18 envelopes with the maximum quantity of nodes - 40 (in each envelope). Also there is a tab where it is possible to edit dependence of amplitude of the clicked key bending from a tonality. There is a possibility of synchronization of provisional regulations of nodes of envelopes with rate of composition in DAW.
• Controlled randomization of parameters of granular synthesis.
• Amplitude non-linear distortions, with a possibility of a type selection (a klipping, bit-kresher, etc.) - only 11 types.

http://stone-voices.ru/vst/polygas

Marazmator

Stone Voices has released version 2.2 of Marazmator, a free multi-modulation Synth VST instrument plug-in for Windows.

Three generators with four types of wave forms: sine, triangle, saw and reverse saw. Oscillations of each generator is exposed to amplitude distortions: distortions (direct and reverse) and bit reductions. Generators connect according to a certain diagram, providing nine options of switching of communications in between, to different modes of interaction: frequency (F) and multiplied (M) modulations.

• Pipe - the filter. The virtual analog of a pipe through which there passes the sound, resounding on the overtones depending on its geometrical sizes.
• The LF and HF adjustable filters with different types of filtering: biquadratic filter, Butterworth and Chebyshev filters.
• The unit of effects including a flanger and a reverberator.
• Pattern sequencer.
• Presets control box.
• Detailed help manual.

http://stone-voices.ru/vst/marazmator?lang=en