AudioThing is a Dublin, Ireland-based audio software company founded in April 2011 by composer, sound designer, and programmer Carlo Castellano. The company develops a diverse catalog of effect and instrument plugins available in VST, AU, AAX, and CLAP formats for macOS, Windows, and Linux. Their effects range from vintage hardware emulations — such as the tape echo plugin Outer Space, the spring reverb modeler Springs, and the tape machine plugin Reels — to creative tools like Fog Convolver (a convolution processor), Wires (a cable/wire simulation effect), and the modular "Things" series of compact utility effects.

On the instrument side, AudioThing offers sample-based recreations of classic hardware including the SR-88 drum machine, the Wurly electric piano, and the Philicorda organ, alongside more experimental instruments like Noises (a textural sound generator) and miniBit (a chiptune synthesizer). Both Wires and Noises were notably used by composer Benjamin Wallfisch in the soundtrack for Alien: Romulus. The company's plugins have been used by producers and artists including Andrew Scheps, Brian Eno, Martin Gore, and Jordan Rudess.

AudioThing operates as a small, focused team supplemented by freelance specialists in sound design, DSP programming, and graphic design across multiple continents. In addition to desktop plugins, the company also develops iOS audio applications.

AudioThing has 89 products cataloged on Equipboard, including Kontakt Instrument, Multi-Effect Plugins, and Synth Plugins. Their gear is featured by 6 artists, with the strongest followings in Electronic, Rock, and Pop. Notable users include emma essex, Hainbach, and Graham Massey. Most AudioThing products sit on the budget-friendly end of the spectrum.