Doctor Synth’s Favorite Free Instruments:
25+ Virtual Instruments I run on all my DAWs

2Gether Audio – Cheese Machine 2 – Solina string machine emulation
https://www.2getheraudio.com/instruments/cheeze-machine-2/
2Gether Audio – Ticky Clav 2 – Hohner Clavinet emulation
https://www.2getheraudio.com/instruments/ticky_clav_2/
Brain Control – Tunefish v4 – lightweight virtual analog synth
https://tunefish-synth.com/
Combo Model F – Farfisa Transistor Organ emulation
http://www.vst4free.com/free_vst.php?plugin=Combo_Model_F&id=1365
Dexed – Yamaha DX7 emulation
https://asb2m10.github.io/dexed/
DiscoDSP – OBXD – Oberheim OBXD eumulation
https://www.discodsp.com/obxd/
Full Bucket – 20 mostly Korg analog synthesizer emulations
https://www.fullbucket.de/music/vst.html
Futucraft – Kairatune
http://futucraft.com/kairatune/
Green Oak – Crystal – venerable softsynth
http://www.greenoak.com/crystal/dnld2.html
Ichiro Toda – Synth 1 – Nord Lead 2 Emulation
https://daichilab.sakura.ne.jp/softsynth/index.html
IK Multimedia – SampleTank 4 Custom Shop – Vintage Synth collection
https://www.ikmultimedia.com/products/index.php?R=INIT&FV=free-software-related-products&CV=Other%20Filter&PSEL=freesoftware
IK Multimedia – Syntronik Free – Vintage Synth collection
https://www.ikmultimedia.com/demodownload/?a=syntronik-free
Linplug – Free Alpha – wonderful synthesizer for dance sounds, very Novation-like
http://www.vst4free.com/free_vst.php?id=2290
Martin Lüder – PG8X – Roland JX-8P emulation
https://sites.google.com/site/mlvst0/
PureMagnetik – Expanse – Texture Generator
https://puremagnetik.com/products/expanse
Spitfire Audio – Labs – several sample-based instruments
https://www.spitfireaudio.com/labs/
SQ8L – Ensoniq ESQ-1 emulation for Windows 32-bit only, sadly
http://www.buchty.net/ensoniq/index.html#sq8l
Steinberg – Model-E – Moog Minimoog emulation
https://www.steinberg.net/de/support/nicht_mehr_unterstuetzte_produkte/vst_classics_vol_1.html
Steinberg – Neon – basic analog synth
https://www.steinberg.net/de/support/nicht_mehr_unterstuetzte_produkte/vst_classics_vol_2.html
Surge Surge Synth Team – Surge – Winner of KVR’s Best Free Synth award in 2020
https://surge-synthesizer.github.io/
TAL – Bassline – Roland SH101 emulation
https://tal-software.com/products/tal-bassline
TAL – Noisemaker – Roland Juno 6 emulation
https://tal-software.com/products/tal-noisemaker
U-He – Podolski – cpu efficient virtual analog synthesizer
https://u-he.com/products/podolski/
U-He – Triple Cheese – comb filter synthesizer
https://u-he.com/products/triplecheese/
U-He – Tyrell N6 – a fun virtual synthesizer
https://www.amazona.de/freeware-synthesizer-tyrell-n6-plugin-vst-au-win-mac/
U-He – Zebralette – lightweight version of the powerful Zebra 2 instrument
https://u-he.com/products/zebralette/
 Vital Audio – Vital spectral wavetable synth
https://vital.audio/