All are free - download the plugins here :
ln.sync.com/dl/3e98951a0/n5wwiugq-h56gdr85-tg9bwmnj-htz7j7dr
To download everything, click the "Download all" button at the upper right of the Sync.com page linked above, but be warned - it will take a very long time.
Click here to download only the .dlls :
ln.sync.com/dl/74a155ac0/dk8nnavk-x9jy5b6z-xkznfvcp-hutv2fzm

For those who don't have a Digital Audio Workstation or any kind of plugin host on their computer, and are just curious and would like to play around with these, I highly recommend Hermann Seib's free little applet, vstHost available here:
www.hermannseib.com/english/vsthost.htm
You won't even need a MIDI keyboard connected to your computer.

The plugs are 32-bit, Windows-only; they cannot be made Mac-compatible because they were made with Synthmaker, which doesn't support it; nor it's current version, Flowstone (I know - talk to them!).  To use these on a 64-bit system, there's jBridge : jstuff.wordpress.com/jbridge/

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copperHead

Polly v1.01

S-One

Banquo

Synthe-System_plus

spirit of Spirit v1.01

PolyStep II

Yumaha CS-35 II

Mx-Jr v1.01

The Music Weasel

Rolend PG-238 v1.01

minDy

minDy S

minDy 2

Yumaha CS75M

200 Max

DodecaMax

DodecaMax II

200 M

200 E

Skylab OS

200 C

The Dodeca 258

The DodecaPlex

SystemOne D

SystemOne E

SystemOne G

Chorg 770stick

Chorg PS-352

Chorg PS-3500

Chorg 870 DV

Yumaha CS78F

OB-2

TriGoom

Chorg 770

Rolend SH-12

Obie-12

Rolend SH-3p

tonus Nineteen70

M-5600

PPG 1022 v1.01

Synthegrated 35A

CS-FM

Obie 2V v1.01

TwoPro

TwoSEM_stick v1.01

80-vox v1.02

80-vox IV

80-vox II

80-vox_GX osc

Tone Boardz v1.01

ZoomChak pro II

Dark Four

Dark Steps

tonus 2813

tonus 2620

DX Won

Rolend System 500p

Rolend SH-1200

tonus Pro Colorist

Sovereign I

Rolend Block-8

Rolend Block-1

Rolend Block-8_cables

Chorg DS-600

Zoomchak

ZoomChak pro

minimodular

Chorg PS-20

Insoniq EZQ-1

Insoniq EZQ-FM

The Putnie

Synthy P

OatsFM

Rolend noSoupRsaw

ELK-Ette

'M'

Kroma Duette

SV-Two

Slab 4

Auditie

Atticus II

Tyro v1.101

Dark Two

SubTwo

SubStick

Multipoly v1.01

DualMulti_Stick

twoBYthree

CyRinx v1.01

Insoniq EZQ-1a

Matrix-Six1 v1.01

eXpando II

EML 500

Joker

the KAT/stick

mOdyCat

CS-358

Rolend System 101 M

Rolend System 101M_stick

Rolend System 101Max_suite

Rolend System 101M_Exp

tonus Explorer AT

tonus Explorer AT+

Nebula-K

OdyPatch

Cassini

tableBlend

b6

CutOats

JP-680

Rolend SH-57

Rolend SH-75

ZMZ 2000

Syntha-kon

Luge

Cronus