Saltline is the VST plugin imprint of Decadebridge, a small audio outfit based in Cheshire, England that began releasing free 32-bit Windows plugins around 2006. The line is built with SynthEdit and leans toward unconventional, left-field takes on familiar effect and synthesis ideas, with a distinctive visual style and naming scheme drawn partly from Polish words for trees and plants.

The Saltline catalog spans effects and instruments. Effect plugins include Lisc-verb (reverb), Lisc-delay (delay), Lisc-step (step-sequenced filter), Hotel S.O.A.P and Son Of A Pitch (pitch-shifting and time-stretching tools), and Shallow Grave (filter). On the instrument side are the drzewo synth series — Brzoza (FM), Cedr (chiptune-style sequencer/synth), Swierk (virtual analog) — alongside Bicetre (FM noise synth), ADHDidi (additive), TrainDeer (ambient/textural), the BalterLITE sample player, and drum tools like CBW01, Korzenie Kick and Korzenie Clap.

The Saltline plugins are now grouped together as a legacy collection on the Decadebridge website, where the same maker has expanded into hardware synthesizers and Eurorack modules. The plugins remain free downloads aimed at producers looking for textural, experimental sound design rather than studio-staple emulations.

Saltline has 7 products cataloged on Equipboard, including Synth Plugins, Generator Plugins, and Filter Plugins.