United Plugins is a federation of independent audio plugin developers based in Prague, Czech Republic, operating as part of the MeldaProduction portfolio. The label brings together small teams with backgrounds in the music industry — founding members include JMG Sound, FireSonic, and SounDevice Digital, with later additions such as Instant Audio — allowing each group to design and engineer its own plugins while sharing a unified marketing, sales, and distribution platform.

The catalog spans saturation, distortion, modulation, reverb, vocal processing, and creative effects for VST, VST3, AU, and AAX hosts. Titles include the Plamen saturator and Duoflux dual-modulation processor from SounDevice Digital, the Cyberdrive distortion and Relooper remix tool from JMG Sound, the FireSpacer frequency-masking utility and FirePreamp from FireSonic, and the BassRift bassline tool from Instant Audio. United Plugins also distributes the free UnitedFreeBundle, a ten-plugin collection aimed at introducing producers to the developer family.

United Plugins has 43 products cataloged on Equipboard, including Multi-Effect Plugins, FX Bundle Plugins, and Vocal Processing Plugins. Most United Plugins products fall in the mid-tier range — professional-grade without flagship pricing.