VST plugins are virtual instruments and effects that you can use in productions. They can recreate classic synth designs, or represent completely new ways of making sound. VST plugins are easy to use; download them, install, and your DAW will pick them up and let you use them in the workstation.
Microsoft Windows and Apple OSX/macOSDistribution downloads are available for Windows (version 7 or later) and OSX/macOS (version 10.8 or later), in 32-bit and 64-bit compilations. Each version is a single .DLL (Microsoft) or .VST (Apple) file. There is no complicated installation procedure, and no license key validation is required.
Steinberg VSTi Instrument v2.4
The VST plug-in conforms to VSTi v2.4 and has been tested with FL Studio, Cakewalk Sonar, Ableton Live, Tracktion, Cubase, Nuendo, Reaper, Bitwig, EnergyXT, Studio One, Renoise, Harrison Mixbus, Propellerhead Reason, MAGIX Samplitude, Zynewave Podium, MOTU Digital Performer, MuTools MuLab, Ardour, Cantabile, Steinberg Dorico, SoundBridge, Jeskola Buzz, OpenMPT, Vienna Ensemble Pro, Carla Plugin Host, Kushview Element, Gig Performer, Plogue Bidule and Akai MPC.
Apple OSX/macOS Audio Unit (AU) Version
An Audio Unit version of the plug-in is included with the OSX/macOS download. It has been tested with Logic Pro, AU Lab, Ableton Live, Tracktion, PreSonus Studio One, FL Studio and Universal Audio LUNA.
Linux
Please refer to the Linux Page.
I recently bought a digital piano. It was mainly to learn piano, but also as a controller to use with Omnisphere. I really did think it would be as simple as installing the discs, connecting the keyboard by USB to my PC and then synthesizing away.I thought I didn't need anything else and that I could get to grips with DAWs at a later date, but clearly I was wrong! So my question is: what is the simplest — ie. most idiot-proof — way of getting sound from Omnisphere on my PC that won't require too much technical ability and know-how?
This is Spectrasonic's Omnisphere running as a stand-alone soft synth inside Herman Seib's excellent Savihost utility. Savihost is one of the simplest VST hosts, as well as being a valuable test tool.
Via SOS web site
SOS contributor Martin Walker replies: To use a plug-in like Omnisphere without a DAW, you require a host application capable of loading VST instruments. Examples of suitable 'full-featured' hosts include Ableton Live, Cubase, GarageBand, Logic and Reaper. Developers do get occasional complaints from users if they don't provide a standalone version of their software instruments as well as the plug-in version, but there's really no need for them to take the time, trouble and expense of creating their own stand-alone application when so many simple host utilities are also already available to let you run any VST instrument in stand-alone mode.
Mac users can download VST Lord (http://arne.knup.de/?page_id=32) for OS X use, while PC users have several choices, including the free Cantabile Lite (www.cantabilesoftware.com), Tobybear's donationware Minihost (www.tobybear.de/p_minihost.html), and Herman Seib's Savihost (www.hermannseib.com/english/Savihost.htm).

Rent To Own Vsts
Savihost is probably the simplest to use of all of those listed above. It was created for the sole purpose of automatically loading only one VSTi, is extremely quick to load, is light on system resources, is available in both 32-bit and 64-bit versions to suit whichever format of soft synth you're using, and also supports ASIO drivers for low latency during performance. You just unzip the Savihost file into the same folder as the DLL file for your VST instrument (in this case Omnisphere.dll), then rename the file Savihost.exe to the name of your instrument (so, in this case, Omnisphere.exe).
Finally, double-click on this renamed file and your instrument will appear in all its glory. Just use Savihost's Devices menu to choose your MIDI input device and audio output device and you can start playing it. Even if you don't have a keyboard controller on hand, you can download a different version of Savihost including its own software version that you can play with your mouse.
Plugin Play Rent Vst Plugins

Vst Video Plugins
I've used Savihost myself on quite a few occasions over the years, and not only for playing soft synths as stand-alone applications. It's also a very useful tool if you have any problems running a particular soft synth in a DAW, since you can use it to check that the synth is installed and running correctly without all the extra paraphernalia associated with sequencers, editors and so on. As before, just drop the Savihost file into the same folder as the problem synth DLL, rename it and then double-click on it. If the synth works properly in Savihost, any problem is most likely to be with your DAW. The other advantage of the renaming process is that you can have several instances of Savihost in one 'vstplugins' folder, each launching a different stand-alone synth.