Rez

Rez free software-synthesizer by Ugo

Rez is a free software synthesizer developed by Ugo. Available format(s): VST for Windows.

Rez is a seemingly basic synth, but it’s capable of a very wide range of sounds. While Rez has a bunch of cool features, the beating heart of Rez is its filter. It’s made from multiple chained filters acting as a single powerful filter and it’s highly resonant, providing Rez with its distinctive character. Top that off with distortion, a phaser, various oscillator modulations, delay, and a killer programmable arp and step sequencer, and you’ve got a powerhouse of a synth in a very small package.

From funky squishes, beastly basses, and screaming leads, to tight arpeggiations, swirling rhythms, atmospheres, bells, and interesting effects, you’ll find it all here. Additionally, it comes with two skins – Yellow & Black, or Black & Yellow.

Features:

  • Virtual analog oscillators.
  • Sub-oscillator.
  • Detune (modulatable via aftertouch).
  • Programmable phrase arpeggiator.
  • Step sequencer (arp driven) with four mod destinations.
  • Highly resonant low pass filter with velocity, LFO, and envelope modulation.
  • “Age” control (noise to pitch).
  • Two types of phase modulation.
  • Beastly overdrive with three tone modes.
  • Dual delay with stereo width adjustment.
  • Phaser with optional LFO and velocity modulation.
  • MIDI learn for all controls.
Made with SynthEdit

http://www.ugoaudio.com/

Revitar 2

Revitar 2 free software-synthesizer by CutterMusic

Revitar 2 is a free software synthesizer developed by CutterMusic. Available format(s): VST for Windows, macOS.

Revitar 2 is a guitar synthesizer and can produce a wide variety of guitar sounds and playing styles. To achieve added realism and playing flexibility, Revitar employs unique guitar pick, string and body simulations. No samples are used in the entire process, so no two notes ever sound the same.

Features:

  • Unique string and body simulation.
  • Adjustable pick shape.
  • 48 programmable chords, using absolute and relative positions.
  • Different playing styles – slides, hammer on / pull offs, chords, single string.
  • 6 guitar body types to choose from.
  • Fully programmable MIDI control of all knobs and sliders.
  • Intuitive user interface.

Retro Boy

Retro Boy free software-synthesizer by Sound-Base Audio

Retro Boy is a free software synthesizer developed by Sound-Base Audio. Available format(s): VST for Windows.

Features:

  • Single oscillator with seven waveshapes: Pulse 1 (12.5%), Pulse 2 (25%), Pulse 3 (50%), Saw, Triangle, Sine, Noise.
  • Volume, vibrato and decimation (to enhance the nostalgia), ADSR envelope, and voice control (1 to 4 voices).
  • Built to be a compact, bare-boned, chiptune synthesizer.
  • Low CPU usage, <1% on i5 processor.
Made with FlowStone

https://sbaud.io

resyn

resyn free sampler | software-synthesizer by xoxos

resyn is a free sampler and software synthesizer VST plugin developed by xoxos. Compatible OS(s): Windows.

resyn is a free spectral resynthesis WAV sampler.

Features:

  • Specification of time, pitch and spectrum/formants.
  • Cross synthesis between files.
  • Phase smearing for whisper and ensemble effects.

Version 2 expands sampling options and sample time.

Made with SynthEdit

https://www.kvraudio.com/developer/xoxos

Remedy

Remedy free software-synthesizer by KeyToSound (Koblo)

Remedy is a free software synthesizer developed by KeyToSound (Koblo). Available format(s): VST, Audio Unit, RTAS for Windows, macOS.

Features

General:

  • Portamento with Automatic Setting or user set amount.
  • 5 voice Polyphony.
  • Monophonic Mode.
  • Legato Mode.

LFO Section:

  • Global ON/OFF.
  • 6 Waveforms.
  • Adjustable Rate and Attenuation.
  • Pitch.
  • FM Modulation Send.
  • PW Modulation Send.
  • Cut off amount.

Amp Section:

  • Attenuation.
  • Attack, Hold, Decay, Sustain and Release (AHDSR Envelope) controls.
  • Pulse Width Modulation Amount.
  • FM Modulation Amount.

Oscillator Section:

  • Two Oscillators.
  • Osc. 1: 5 waveforms.
  • Osc. 2: 7 waveforms.
  • Mix control between Osc. 1 and Osc. 2.
  • Pulse Width Modulation Amount.
  • FM Modulation Amount.
  • Osc. Mix.

Filter Section:

  • Filter Amount.
  • Attack, Decay, and Sustain controls.
  • Cutoff Frequency.
  • Resonance Amount.
  • Drive Amount.
  • Mod Wheel Control Amount.
  • Velocity Control Amount.

Arpeggiator Section:

  • Synchronize to Host.
  • 1 to 4 Octave Range.
  • Echo FX On/Off.
  • 7 Mode Settings.
  • 7 Pattern Settings.

Refractor

Refractor free software-synthesizer by Noizefield Instruments

Refractor is a free software synthesizer for Reaktor, developed by Noizefield Instruments. Available format(s): for Windows, macOS.

REFRACTOR is a synthesizer for Native Instruments Reaktor, based on Karplus Strong synthesis. Instead of using noise as the impulse this synth does use sample-wavetables. Therefore the results are much more experimental, unforeseeable and multifarious. Several delay lines, a multimode filter and special tweaks make this synth unique.

Works with Native Instruments Reaktor 5.9.4 and above.

{See video at top of page}

http://www.noizefield.com/

RedTron SE

Redtron_SE free rompler by Artifake_Labs

Redtron_SE is a free rompler VST plugin developed by Artifake_Labs. Compatible OS(s): Windows.

RedTron_SE is a Special Edition of the RedTron_400. This VST plug-in uses the Taijiguy’s Mellotron samples (taken from a 1973 Mellotron M400S – Serial #500). The samples have been cleaned (not too much) by removing an annoying 60Hz hum and some unwanted “clicks” and “pops” here and there.

Features :

  • Nine sound types: MKII Flute, MKII 3 Violins, M400 Cello, MKII Brass, M400 Combined Choir, M400 String Section, M400 Woodwinds, M300A Violins, M300B Violin.
  • No loops: as the original Mellotron, each sound is eight seconds long with, in many cases, “the bad endings”.
  • Exclusive “Mellotronic Click Switch” (MCS). On real Mellotrons, “Click” can be heard at the beginning of a note, when the tape comes in contact with the replay head. On REDTRON_SE, these “clicks ” are randomly generated when you hit a key : you don’t hear twice the same and they can appear on any note. A rotary knob allows you to control the effect intensity (of course, you can also completely disable it ). Note : this function is inactive when the attack parameter is set to any value different from zero.
  • Layer (two sounds A & B) and split possibilities (octave shift).
  • Independent parameters for sound A & B:
    • Volume, Tone, Pan, Tune, Reverb, Delay, Attack & Release, Octave & Note parameters.
    • Delay effect (Amount, Time, Feedback & Pan parameters).
    • Reverb effect (Mix, Width, Size & Damp parameters).
  • Global Volume control.
  • Global Tone control.
  • Global Pitch control.
Made with SynthEdit

https://sites.google.com/site/artifakelabs/

RedTron MKV

RedTron_MKV free rompler by Artifake_Labs

RedTron_MKV is a free rompler VST plugin developed by Artifake_Labs. Compatible OS(s): Windows.

RedTron_MKV emulates the “Mellotron MKV” (essentially a double M400), one of the rarest Mellotrons ever made.

Features:

  • Six sound types: 3 Violins, 8-Voice Choir, Flute, Brass, String Section, Cello.
  • “Loop” and “Non-Loop” modes: as the original “Mellotron”, each sound is eight seconds long but you can switch to “Loop Mode” and allows the samples to loop continuously.
  • Layer possibilities & independent parameters for layer A & B:
    • Volume, Tone, Reverb, Delay, Pan, Octave, Note & Attack parameters.
    • Delay effect (Amount, Time, Feedback & Pan parameters).
    • Reverb effect (Mix, Width, Size & Damp parameters).
  • Pitch control.
  • Can be used as Soundfont Player to mix any.sf2 file with “Tron sounds” or to extend the sound palette.
Made with SynthEdit

https://sites.google.com/site/artifakelabs/

RedTron 400

RedTron_400 free rompler by Artifake_Labs

RedTron_400 is a free rompler VST plugin developed by Artifake_Labs. Compatible OS(s): Windows.

RedTron_400 emulates the “Mellotron M400”.

Features:

  • Realistic user interface.
  • Six sound types: MKII 3 Violins, MKII Flute, M400 8-Voice Choir, MKII Brass, M400 Cello, M400 String Section.
  • “Loop” and “Non-Loop” modes: as the original “Mellotron”, each sound is eight seconds long but you can switch to “Loop Mode” and allows the samples to loop continuously.
  • Layer possibilities & independent parameters for layer A & B:
    • Volume, Tune, Reverb, Delay, Pan, Octave, Note, Cutoff, Resonance, Attack & Release parameters.
    • Delay effect (Amount, Time, Feedback & Pan parameters).
    • Reverb effect (Mix, Width, Size & Damp parameters).
  • Global Volume control.
  • Global Tone control.
  • Global Pitch control.
  • Can be used as SoundFont Player.
Made with SynthEdit

https://sites.google.com/site/artifakelabs/

Red Devil

Red Devil free software-synthesizer by LRsynths

Red Devil is a free software synthesizer developed by LRsynths. Available format(s): VST for Windows.

Features:

  • Up to 32 voice polyphonic.
  • 3 Oscillators with various Waveforms (Sine, Saw, Ramp, Triangle, Pulse, White Noise, Pink Noise).
  • Switchable 24 dB LowPass Filter / HiPass Filter / BandPass Filter with Filter Envelope.
  • ADSR.
  • LFO with Routing.
  • Mod-Section.
  • Simple Delay.
  • MIDI Automation.
Made with SynthEdit

http://www.alphastrike.de/orangebase/vst.html