GTG Synths is a developer of freeware VST synthesizer plugins for Windows, run by a developer known online as Mik. The catalog covers a range of synthesis approaches, including subtractive/analog-style instruments like the GTG 44 S, GTG JP 7A, GTG K1.3, and GTG NR 2010, FM synthesis with the GTG FM 4 and Sputnik 2000, and an electric piano emulation in the EP 2008.

Beyond synths, GTG has released drum-oriented tools such as the FreeDrum programmable drum synth and the GTG DPC 3 drum machine, along with utility plugins like Micro Keyboards. The instruments are distributed at no cost and have circulated widely through freeware directories such as KVR Audio, Plugin Boutique, and Plugins 4 Free.

GTG's plugins have built a following in the hobbyist and bedroom-producer community for their light CPU footprint, straightforward interfaces, and approachable programming, making them a common recommendation on forums like KVR and Gearspace for producers looking for free Windows synth options.

GTG Synths has 9 products cataloged on Equipboard, including Synth Plugins and Drum Machine. Their gear is featured by 1 artist, with the strongest followings in Electronic. Notable users include Deadmau5.