OBXD – Oberheim OB-X Emulation

https://obxd.wordpress.com/

about:
http://bedroomproducersblog.com/2014/01/22/obxd-vst/

download:
http://www.kvraudio.com/forum/viewtopic.php?f=1&t=387568

VSTForx

(not free... a 4 plugin demo avalaible)

VSTForx is a full-modular effect network creation tool which comes as a VST-plugin. With VSTForx you are able to load any number of VST-plugins and connect them anyway you want.
Additional modules allow you to manipulate such signal chains and offer a whole new way in mixing and producing.

http://www.vstforx.de/