Hoar

Hoar free software-synthesizer by Fsynthz

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

Fsynthz is a string-machine-type synth with bright and sharp sounding (up to 16x unison per voice) patches. It is designed to produce unusual synth-FX with modulated filtering with randomness and other stuff. It also has an extra wide keyboard range (6 octaves).

Features:

  • Phrase arpeggiator/gate with hold.
  • 4 stereo tools (used simultaneously).
  • Compact GUI with balloon tool-tips on controls.
  • CPU-friendly for the sound.
Made with SynthEdit

http://www.fsynthz.com

Hexter

Hexter free software-synthesizer by Sean Bolton

Hexter is a free software synthesizer developed by Sean Bolton. Available format(s): DSSI for Linux.

Hexter is modeled after the classic 6 operator “FM” based DX7 hardware synth.

Features:

  • Based on 6 Operator Yamaha DX7 FM architecture.
  • Loads and saves standard 32 or 1 patch DX7 SysEx files.

http://dssi.sourceforge.net/hexter.html

Hexagon ’85

Hexagon '85 free drum-machine by MARVIN VST

Hexagon 85 is a free drum machine VST plugin developed by MARVIN VST. Compatible OS(s): Windows.

Hexagon ’85 is a virtual electronic drum synthesizer.

Features:

  • 5 analog drum synthesizers:
    • Bass drum.
    • Snare drum.
    • Low tom.
    • Mid tom.
    • High tom.
  • 4 mono samplers:
    • Closed hihat.
    • Open hihat.
    • Crash cymbal.
    • Ride cymbal.
  • 8 outputs.
  • MIDI CC support.
  • Automation support.
Made with SynthEdit

http://marvin.starfree.jp/

Helm

Helm free software-synthesizer by Matt Tytel

Helm is a free software synthesizer developed by Matt Tytel. Available format(s): VST, VST3, Audio Unit, LV2 for Windows 64b, macOS.

Helm is a free, cross-platform, polyphonic synthesizer with a flexible modulation system. Helm is open source and you are free to run it anywhere, study and change the source code, and redistribute exact or modified copies of Helm.

http://tytel.org/helm

Heliox

Heliox free software-synthesizer by CO2Sound

Heliox is a free software synthesizer developed by CO2Sound. Available format(s): VST for Windows.

Heliox is a rather simple experimental synthesizer, with a “no-frills” GUI, capable of “weird” textures and noises, as well as “normal” synth sounds, like pads, leads and basses.

Main features are:

  • monophonic, with 30 oscillators bank.
  • adjustable oscillators’ frequencies, ranging from single frequency to harmonic and non-harmonic series.
  • oscillators can be purely sinusoidal, or “shaped” by an adjustable parameter.
  • adjustable attenuation factor between successive oscillators.
  • 30 LFOs, each modulating amplitude of corresponding oscillator.
  • adjustable LFOs’ frequencies, similarly to oscillators.
  • LFOs can be purely sinusoidal (“bell-like”) or “shaped” by 2 adjustable parameters: center and sharpness.
  • phase shift between successive LFOs is adjustable.
  • LFOs can be periodic or randomly intermittent, with adjustable “density”.
  • ADSR envelope.

KVRDC12

http://remigiococo.xoom.it/index.html

HCX

HCX free drum-machine by MARVIN VST

HCX is a free drum machine VST plugin developed by MARVIN VST. Compatible OS(s): Windows.

HCX is a classic hi-hat synthesizer with analog synthesis.

Features:

  • 3 sounds
    • Closed/Pedal/Open hi-hat.
  • 6 pulse wave oscillators
    • 2 oscillator types.
    • General pitch control.
  • Tone controls for Closed & Pedal hi-hat/Open hi-hat.
  • Decay control for each part
    • 2 envelope types for Open hi-hat.
  • Level balance control.
  • MIDI CC support.
  • Automation support.
Made with SynthEdit

http://marvin.starfree.jp/

Harsh Digital Nose

Harsh Digital Nose free software-synthesizer by Insert Piz Here

Harsh Digital Nose is a free software synthesizer developed by Insert Piz Here. Available format(s): VST, Audio Unit for Windows 64b, macOS.

Harsh Digital Nose is a synthesizer that converts two images into two oscillator waveforms and then mixes them in various horrible ways. You can drag and drop images or draw them on the plugin in real time.

The Basics
There are two image-based oscillators. The knobs between them apply to the second image, based on the first image. There is then a third oscillator that plays ordinary waveforms, which can be modulated by the image oscillators. The “M” button below each pitch knob toggles on/off the oscillator pitch following input MIDI notes. The little green and red dots on the images are the start and end points of the oscillator waveform. Colors in the images do “something” (???).

http://www.thepiz.org/

Harmonaut

Harmonaut free software-synthesizer by ToneBytes

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

Harmonaut is a simple VST instrument that implements an additive synthesis with four waveform types and 32 harmonics that can be simple drawn with the mouse. In the same way can be adjusted the attack, decay, sustain and release for each harmonic. Additional timbre adjustments are made using LP/HP filter, LFO and chorus.

Main features:

  • 32 drawable harmonics with separate ADSR per harmonic.
  • 4 waveform types (sine, saw, triangle and square).
  • Multimode LFO synced with BPM.
  • Internal chorus.
  • Easy control with pop-up menus.
  • 64 factory presets.
  • Built-in preset manager with ability to patch name editing.

In addition, VST automation and full MIDI Learning are supported.

{See video at top of page}

Made with SynthEdit

http://tonebytes.com/

Harbor Blue

Harbor Blue free softsynth-skin by satYatunes

Harbor Blue is a free softsynth skins stand alone application plugin for Dune developed by satYatunes. Compatible OS(s): Any OS.

Harbor Blue is a custom skin for Synapse-Audio’s Dune 2 plugin.

Release Notes:

v1.3 – December 25, 2015:

  • Added analog switch that is introduced in v2.5.
  • Arp steps was numbered 9 – 18 instead of 9 – 16.
  • Redesigned the osc-mixer, filter and envelope section.
  • New Knobs.
  • Redesigned the switches (Arp, Fx, MIDI In, etc.).
  • Redesigned the display panels for Waveforms, LFOs, etc.
  • Replaced satYatunes logo.
  • Added Harbor Blue label.

v1.2 – December 20, 2014 – Redesigned the entire skin, too many changes to list here.

v1.1 – November 25, 2014 – Active LED for FX was flipped.

v1.0 – November 21, 2014 – First release.

http://satyatunes.com

Hahaha CS33

Hahaha CS33 free software-synthesizer by Pethu

Hahaha CS33 is a free software synthesizer developed by Pethu. Available format(s): VST for Windows.

Hahaha CS33 is an easy-to-program synth in the spirit of the Hahaha CS01, but with many more options:

  • 2 oscillators.
  • 2 envelope generators.
  • 5 filter modes, including twin linked filters.
  • LFO with 5 waveforms and tempo sync.
  • 4 effects including distortion and tempo-synced delay.
  • Expression controllers (BC / AT / Foot Pedal) supported.
Made with SynthEdit

http://www.pethu.se/music/instruments.html