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Windows, Mac OSX, Linux
SURGE Synthesizer 1.7.0 - Win / Mac / Linux [FREE] screenshot
Win x86 x64 vst3 - Mac 64-bit AU & VST - Linux 64-bit VST3 | 35 - 74 - 37 MB

Surge is a digital synth and makes no bones about it.
If you have used it in the past, it will be like welcoming an old friend back into your life. If you are new to Surge, welcome to the party. Come on in, the water is fine.
Surge is back and open source!
Thanks to the generosity of @Kurasu (owner of Vember Audio), Surge has been open sourced and lives on GitHub.

Synthesis method: Subtractive hybrid

Each patch contain two 'scenes' which are separate instances of the entire synthesis engine (except effects) that can be used for layering or split patches.

Quick category-based patch browser

Runs on a variety of OSes, Plugin Formats, and Architectures

1010 patches

183 wavetables

3 oscillators per voice

8 versatile oscillator algorithms: Classic, Sine, Wavetable, Window, FM2, FM3, S/H Noise and Audio input

The classic oscillator is a morphable pulse/saw/dual saw oscillator with a sub-oscillator and self-sync.

The FM2/FM3 oscillators consists of a carrier and 2 or 3 modulators and various options.

Most algorithms (except FM2, FM3, Sine and Audio-input) offer up to 16-voice unison at the oscillator level.

Oscillator FM/ring modulation

Most oscillator algorithms (except FM2/FM3) are strictly band-limited, yet still cover the entire audible spectrum, delivering a clear punchy yet clean sound.

Noise generator with variable spectrum.

Two filter units in 8 different configurations

Feedback loop (number of variations inside the parenthesis)

Available filter algorithms: LP12 (3 variations), LP24 (3 variations), LP Ladder (1-4 poles), HP12 (3 variations), HP24 (3 variations), BP (4 variations), Notch (2 variations), Comb (4 variations), S&H

Filters can self-oscillate (with excitation) and respond amazingly fast to cutoff frequency changes.

Waveshaper (5 shapes)

12 LFO units available, 6 are per voice and 6 are global for the whole scene

DAHDSR envelope generators on every LFO-unit

7 deformable LFO waveforms + drawable/step sequencer waveform

LFO 1 allows envelope retriggering when used as step sequencer

Extremely fast and flexible modulation routing. Almost every continuous parameter can be modulated.

8 effect units arranged as 2 inserts per scene, 2 sends and 2 master effects

10 top-quality algorithms:

Delay, Reverb, Chorus, Phaser, EQ, Distortion, Conditioner (EQ, stereo-image control, and limiter), Rotary speaker, Frequency shifter, Vocoder

Changes in version 1.7.0
1.7.0 is a major release done on July 28, 2020. (Enormous changes ndlr)

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  Resident 5.12.2012 814 21264
Uploaded | Rapidgator | Rockfile | Nitroflare | Clicknupload
  Resident 2.11.2014 2480 11771
ZippyShare | Gofile | MEGA
Uploaded | Rapidgator | Nitroflare | Rockfile | Katfile | Clicknupload |
Support me:
  Resident 5.06.2017 25 3061
SUPPORT for new soundbanks,plugins and more:
  Resident 30.12.2017 1 1739
They're moving away from VST2, it's only VST3 from this point onward. Interesting.

This seems to be one of the best freeware synths!
  Resident 4.02.2012 693
Awesome!! As someone who's had this as workhorse synth since 2009 or so it's pure joy. The saga continues (even though it's only as VST3 now). I recommend everyone to try it out at least.
  Moderator 21.01.2012 2370 16089
I confirm that this is one of the best free synth out there.

To support the hard work of the big community working on it, you should visit their website:
  Resident 21.05.2014 77 779
1.7.0 is a major release done on July 28, 2020. (Enormous changes ndlr)

I haven't updated it since last year & I think the time has come!
Is Surge The Ultimate Microtonal Synthesizer?
  Resident 2.02.2014 510
this is the best (free) VSTi imo. The GUI is laid out in a very intuitive way. Having everything accessible on one screen is always a massive plus.
I've used it for ages I have made more presets on this than any other VSTi. It's so great that it's being developed again. Kudos to those peeps.
oh, I forgot, this takes up a tiny amount of resources...
  Member 12.06.2014 1 184
It's EASILY the best :) And if you look at Synth1 it hasnt been updated for many years. Look at Surge's 1.7 changelog, that's active development:
  Moderator 21.01.2012 2370 16089
Many commercial plugins dont have that level of development .
  Resident 10.05.2018 12 500
After the installation this it fucks up my project using VST2 in Ableton. It doesn't remove VST2. It makes some changes in ProgramData. I get errors while opening VST2. It is not a good idea to install this over VST2 if it is used in projects.
  Resident 19.09.2008 8 354
Successfully unpacked the installer and overwrited all, preserving 1.6.6 VST2 dll. All works good. They renamed some presets folders from, for ex. "Pad" to "Pads" and so on
I'm a firestarter, twisted firestarter
  Resident 10.05.2018 12 500
So both versions work for you, 1.6 and 1,7? After installing v1.7 and trying to open vst2 v1.6 I get errors about the path, XML file and waves or presets.
  Resident 10.05.2018 12 500
I have tried to unpack with InnoExtractor and UniExtract but no luck.
  Moderator 21.01.2012 2370 16089
You will find it unpacked in the development page, here:
  Resident 10.05.2018 12 500
Thanks for the link. Will it work if I swapped vst3 v1.6 and 1.7? what I noticed, there is different organisation of the files of those two version.
  Member 1.07.2014 2
If the incoming port is changed and close the plugin window (try open again) - freezes Fl Studio 20.6.2
  Member 25.10.2019 453
This thing can make awesome Psytrance basses.
  Resident 19.09.2008 8 354
Please, someone familiar with Visual Studio, Git and Cmake - build VST2 version. I can provide links for VST 2.4 SDK
I'm a firestarter, twisted firestarter
  Resident 22.01.2014 237
Nice.. had this years & years in tracks all over the place thank you

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