На самом Youtube в комментариях к роликам размещены ещё и ссылки. Работа проделана титаническая, огромная благодарность тем, кто сделал эти две подборки.

На всякий случай копируем ссылки сюда:

Bitsonic - Waspy 2.2 Mini VSTi
http://www.bitsonic.eu/

BK SynthLab - Intro VSTi
http://www.vst4free.com/free_vst.php?.
BK SynthLab - VS-1 Oscilloscope VSTi
http://www.vst4free.com/free_vst.php?.
Buzzroom - Lallapallooza lite v.2.0.1 VSTi
http://www.vstplanet.com/Instruments/.
Cakewalk - Triangle II VSTi
http://www.cakewalk.com/products/tria.
Christoph Bielen - Uniretro VST
http://synthmaker.co.uk/uniretro.html
Code Audio - BeatBurner VSTi
http://beatburner.blogspot.de/2008/03.
Contralogic - Feldspar VSTi
http://www.contralogic.com/vst-plugin.
Contralogic - Pterosaur VSTi
http://www.contralogic.com/vst-plugin.
DSK - TechSynth VSTi
http://www.dskmusic.com/dsk-techsynth/

EVM - Ultrasoniqie v1.1 VSTi
http://evm.110mb.com/free.htm
Fuzzpilz - Oatmeal 38-1 VSTi
http://www.kvraudio.com/product/oatme.
http://bicycle-for-slugs.org/
More skins for the Oatmeal synthesizer (freeware).
http://flavoursoflime.blogspot.de/201.
Green Oak - Crystal VSTi
http://www.greenoak.com/crystal/index.
GTGsynths - GTG K1.3. VSTi
http://www.gtgsynths.com/plugins.htm
H.G. Fortune - Anvilia Pro VSTi
H.G. Fortune - Fortune Cookie 2012 VSTi
H.G. Fortune - LaserBlade S 2011 VSTi
H.G. Fortune - ProtoPlasm 21 VSTi
H.G. Fortune - ProtoPlasm TSM VSTi
H.G. Fortune - Scapes Wizard 1 VSTi
H.G. Fortune - Shuniji 2011 VSTi
H.G. Fortune - Silver Orbit 2011 VSTi
H.G. Fortune - STS-17 VSTi
H.G. Fortune - STS-11 VSTi
H.G. Fortune - STS-26 Pro 2012 VSTi
H.G. Fortune - STS-24i 2012 VSTi
H.G. Fortune - STS-21 Pro 2011 VSTi
H.G. Fortune - Swamp VSTi
H.G. Fortune - Percumat2 VSTi
H.G. Fortune - Plutonia VSTi
H.G. Fortune - Wheel of Fortune VSTi
H.G. Fortune - X-WoF 4 VSTi
HGFortune NFG (Nearly Forgotten Gems) Pro versions now free!

http://www.hgf-synthesizer.com/nfg---.
Ichiro Toda - Synth1
http://www.geocities.jp/daichi1969/so.
iloyd - iloSynth VSTi
http://freemusicsoftware.org/416
Magix - Independence Free VSTi
http://pro.magix.com/en/independence/.
Maik Menz - TranceDrive VSTi
http://www.yedey.com/2010/02/official.
Mastrcode Music - T-Force Alpha Plus VSTi
http://www.mastrcode-music.com/main.p.
MeldaProduction - MDrummer Small VSTi
http://www.meldaproduction.com/plugin.
Michael Karstrup - EVOL VSTi
http://www.xsynth.com/
nB Audio - Daedalus VSTi
http://www.omnitaur.se/
Oli Larkin - Beat Morpher VST - 30 sek.
http://www.vst4free.com/free_vst.php?.
Solcito Música - SuperTron VSTi
http://solcitomusica.blogspot.de/p/vi.
Sound Magic - Piano One VSTi
http://www.supremepiano.com/product/p.
Tactile Sounds - TS-Substance VSTi
http://tactilesounds.blogspot.de/p/ts.
Togu Audio Line - TAL-Elek7ro VSTi
http://kunz.corrupt.ch/products/tal-e.
U-HE - Podolski VSTi
http://www.u-he.com/cms/podolski
U-HE - Tyrell N6 VSTi
http://www.u-he.com/cms/tyrelln6
Wolfgang Palm - Plex - Restructuring Synthesizer VSTi
http://plex.hermannseib.com/
ZynAddSubFX VSTi
http://zynaddsubfx.sourceforge.net/
Второй набор:
01. Aciddose - Xhip v0.7 VSTi - PC
http://xhip.net/synth/
02. Farbrausch - V2 - VSTi - PC
http://www.1337haxorz.de/products.htm.
03. Acrobatics - Alieno v 1.0.9 - VSTi - PC
http://www.vst4you.com/pages/vst%20in.
04. Angular Momentum - Freehand VSTi - PC
http://www.amvst.com/freehandfree
05. Angular Momentum - Unifyer VSTi - PC
http://www.amvst.com/unifyer
06. Astralp - Phase Shifter VSTi - PC
http://www.kvraudio.com/kvr-developer.
07. B.Serrano - Adonis Pro VSTi - PC
http://bserrano.free.fr/Synths_Adonis.
08. Beat - Beat Black Mamba VSTi - PC
http://www.kvraudio.com/kvr-developer.
09. BlauKraut Engineering - Charlatan v1.3 VSTi - PC
http://www.blaukraut.info/
10. Audjoo - Helix 2008-04-13 VSTi - PC
http://lesitedeburnie.free.fr/laliste.
11. e-phonic - Drumatic 3 v3.0.2 VSTi - PC
http://www.e-phonic.com/plugins/druma.
12. Fretted Synth - PhazOsc VSTi - PC
http://www.vst4you.com/pages/vst%20in.
13. Full Bucket Music - The blooo VSTi - PC
http://www.fullbucket.de/music/
14. Full Bucket Music - The Deputy Mark 2 VSTi - PC
http://www.fullbucket.de/music/deputy.
15. Futucraft - Kairatune VSTi - PC
http://futucraft.com/category/kairatune/
16. g200kg - kamioooka VSTi - PC
http://www.kvraudio.com/kvr-developer.
17. Glen Stegner - Arppe2600va VSTi - PC
http://glenstegner.com/softsynths.html
18. Glen Stegner - MiniMogueVA VSTi - PC
http://www.vst4free.com/free_vst.php?.
19. Image Line - Autogun VSTi - PC
http://www.image-line.com/plugins/pro.
20. Istvan Kaldor VST Collection VSTi - PC
http://myvst.com/vst-instruments/synt.
21. C.Hackl. - GrooveBox II VST- PC
http://saufboy.sa.funpic.de/chackl/VS.
22. TubeOhm - Fluid.1 PI Exklusive VSTi - PC
http://www.plugindex.de/fluid-1-pi-ex.
23. Elogoxa - Sun Ra VSTi - PC
http://www.dontcrack.com/freeware/dow.
24. Land of Cockaigne - Oberon VSTi - PC
http://www.gersic.com/plugins/index.p.
25. Land of Cockaigne - Quantum 64 VSTi - PC
http://www.gersic.com/plugins/index.p.
26. Land of Cockaigne - Satyr VSTi - PC
http://www.gersic.com/plugins/index.p.
27. L-Day - Antopya VSTi - PC
http://www.kvraudio.com/kvr-developer.
28. Maik Menz - LoopDrive v4.0 - PC
http://www.yedey.com/
29. Majken - Chimera VSTi - PC
http://www.majken.se/index.php?
30. Minimal System Instruments - Twisted Energy VSTi - PC
http://www.pluginboutique.com/product.
31. nix808 - PhonicsAttack Entrancer VSTi - PC
http://www.kvraudio.com/kvr-developer.
32. Noslogan - Rogue VSTi - PC
http://noslogan.omeganetresearch.com/.
33. Odo Synths - Double Six VSTi - PC
http://www.vst4free.com/free_vst.php?.
34. OhmForce - Symptohm PE VSTi - PC
http://www.pluginboutique.com/product.
35. Psychic Modulation - Metatron v1.0.2 VSTi - PC
http://www.kvraudio.com/kvr-developer.
36. Saltline - drzewo Swierk v 1.0.3 - VSTi - PC
http://www.saltline.co.uk/swierk.html
37. Siegfried Kullmann - SQ8L VSTi - PC
http://www.buchty.net/ensoniq/#sq8l
38. SK - Ganymed v1.2 b110 VSTi - PC
http://www.vst4free.com/free_vst.php?.
39. Ftec - Audio - Formant Classic VSTi - PC
http://www.vst4free.com/free_vst.php?.
40. Smart Electronix - Foorius VSTi - PC
http://www.vst4free.com/free_vst.php?.
41. Sonigen - Sonigen Modular VSTi - PC
http://sonigen.com/
42. Stefan Hallen - Anna VSTi - PC
http://freemusicsoftware.org/569
43. Steinberg - VB-1 VSTi - PC
http://www.steinberg.net/de/support/n.
44. Synthescience - Poly 2106 VSTi - PC
http://www.synthescience.com/Products.
45. Tek'IT - Genobazz 2 VSTi - PC
http://tekit-audio.com/products/xt-li.
46. Togu Audio Line - TAL-NoiseMaker VSTi - PC
http://kunz.corrupt.ch/products/tal-n.
47. TubeOhm - Pure-Pone VSTi - PC
http://www.tubeohm.com/TubeOhm/FREEWA.
48. u-he - Zebralette v2.6 VSTi - & MAC
http://www.u-he.com/cms/zebralette
49. Xen-Arts - Xenharmonic FMTS v1.1 VSTi - PC
http://www.xen-arts.com/p/download-vs.
50. Xsynths - Uno FM v1.0 VSTi - PC
http://xsynth.com/free.html
Авторы подборки занимаются созданием наборов патчей для различных платных и бесплатных инструментов. Их сайт тоже стоит навестить.

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