Minihost Modular is a modular environment for hosting/interconnecting VST/AU plugins based on a custom modular engine especially developed for this purpose. As a standalone, Minihost Modular can be used as an advanced VST or AU host with modular routing with some sequencing recording/playback capabilities. As a VST or AU plugin, Minihost Modular can be used to extend the capabilities of your existing DAW software with its powerful modular, recallable, environment. Minihost Modular bares some similarities to FL Studio's Patcher but has an extended capability as a self contained host.
Minihost Modular is free.