Full Bucket Music is a software instrument developer run by German programmer and synth enthusiast Björn Arlt, based in Hanau, Germany. Operating largely as a one-person project, Full Bucket specializes in free VST, VST3, AU, AAX, and CLAP plugins for macOS and Windows, with a particular focus on faithful emulations of classic and obscure hardware synthesizers that have rarely been modeled in software.

The catalog includes emulations of vintage instruments such as the Crumar Bit 01/99 (Bucket ONE), the Korg Poly-61 (Fury-68), the Korg Mono/Poly (Fury-800), the Hohner String Performer, the RMI Harmonic Synthesizer, and the Siel Cruise (Tricent mk III), alongside original designs like the modular ModulAir, the subtractive blooo, and the Kern synthesizer. Full Bucket also develops MIDI utilities and effect plugins under the Full Bucket Effects name.

The plugins are distributed free of charge and are known within the synth community for their low CPU footprint, detailed documentation, and attention to the quirks of the original hardware. Full Bucket's work is frequently covered by outlets such as KVR Audio, Synth Anatomy, MusicRadar, and AudioTechnology, and Arlt also releases electronic music made with his own instruments via Bandcamp and SoundCloud.

Full Bucket has 13 products cataloged on Equipboard, including Synth Plugins and Drum Machine. Their gear is featured by 3 artists, with the strongest followings in Electronic, Rock, and Stage & Screen. Notable users include TehCarterPSpartan, Mick Gordon, and Stephen Hindman.