There’s a number of not that well-known amp sims and pedals out there developed by individuals or smaller, indie, less-known companies that’s not reviewed on this site as of yet. These range from full-blown sims to proof-of-concepts and experiments. Most of these are freeware. Some are excellent but quality varies. To make it easier finding these here is a list (in random order) of some of the amp sims and pedals not mentioned anywhere else on the site.
Check the Modern Deluxe and Tone Deluxe amp sims, also some keyboard-related VSTs. Freeware.
Discontinued. Now available from Audified as the Linda RockStack.
Linda Audio has a few plugins, most interesting to the guitarist would be the Rock Amp. Freeware.
SGA – Ace
A free model of a legendary 1950s, American, all tube, tweed, 5W amp by Shattered Glass Audio.
A science project turning a Klon Centaur schematic into an audio plugin. That’s how the ChowCentaur was born. Includes both a traditional and a neural network-based model. If you want to dig into the code it’s all on Github. Open source software (BSD).
An overdrive that is full of tone and maybe a bit obsessive. Developed as a side-project by a guy who works at Sonible. Code available on Github for this one too. Open source software (GPL).
Wampler is offering VST3 versions of three of the fx from their multi-function pedal Terraform as a test. Included is an envelope follower, a univibe and a chorus. Download is free but you will have to answer a short survey.
Cornflower Audio is a Belarusian developer that offers the Fury amplifier for metal with some pre- and post-fx and a pretty unique UI with slavic warriors and monsters. Don’t miss the “language” menu choice to see the site in English.. Freeware.
Lots of free plugins mainly modeled after analog gear . All released for free on their Patreon page. For guitar you’ll find some preamps and effects pedals including a model of a Russian Big Muff.
NSP is a russian developer that has some overdrive plugins on his site. Check out the Overdrive Rack Pro for example. Freeware.
Has a number of guitar sims but everything is still in beta. Still there are some demos to download if you want to try them out at an early stage.
Guitar Gadgets was an entry to the KVR Developer Challenge 2014. The focus here was not to develop classic effects but weird, strange, ugly or “different” ones instead. Freeware.
A number of amp sims and pedals to download. A good place to start would be with the “Classic Thirty”, that has some unusual (and highly detailed) settings to fine-tune amp gain. Developer Dave Clark was involved with the classic ACME Bar Gig software. Freeware.
If you know a plugin/developer that you think should be on this list, please let us know in the Honest Amp Sim Reviews usergroup on Facebook.