I started using Cubase a few weeks ago, and I think that half of the fun that I've had so far has come from scouring the internet looking for free VST synths and effects. Here are some of the better ones I've come across and like to use. I like synths or effects that come in sets, as you might be able to tell. If you have any more to add, please do so. (FYI - these are all free! ) Tweakbench This site has a whole slew of awesome stuff. If you've ever wanted to do any old-school Nintendo music, these are the VSTi's you need! Between the Peach and Triforce synths and the Toad drum machine, you can make all sorts of NES-sounding songs. The effects are pretty cool too, though I have not had a lot of time to futz around with them. CYGNUS, Gargoyle, and EZ-Poly The link above has a few other synths on the same page, but these three I think are awesome. CYGNUS has probably one of the coolest GUI's ever, and is great for far-out space related sounds. Gargoyle is cool for horror movie-type sounds, and EZ-Poly is a great overall synth that can do some sweet lead tones. Kjaerhus Audio Classic Effects This is a purty suite of effects that are really awesome. You've got all your bases covered here, from a compressor to chorus. I've used them all and they sound great. Each one has a lot of adjustable parameters, too, which is nice. 4Front Piano Module This is a simple piano VSTi to use, especially considering there are no presets, parameters, or settings. You just turn it on and start programming notes. It sounds pretty good though, especially considering the nonexistant price tag. There are some other VST doohickeys on the site, though I haven't had the time to check them all out. Loopazoid Loopazoid is one of the easier to use samplers I've found. It's simple, straightforward, and gets the job done. What more can you ask for? TubeBaby Amp Simulator TubeBaby does a good job, I think. I'm no guitar player, but I like the way it's sounded when I've doodled around with it. Simple with a clean interface. SoundEditor This is actually a list of about 72 free synths, some of which I've tried. If you just like browsing around for various and sundy items, this is a good place to look. KVR Audio Like the above link, this will lead you to all sorts of goodies. You can search for very specific items, which is nice. Just makes sure to indicate what OS you're using, and that you want Free VST items, as opposed to demos or trialware. (Unless you want demos or trialware.) I'll post more as I find them.