RingsFX, developed by Limelight Software, is a powerful AUv3 plugin inspired by the renowned Mutable Instruments Rings Eurorack module. This plugin features a resonator that can be triggered by MIDI, noise, or external audio. It offers three synthesis techniques - Modal Synthesis, Sympathetic Strings, and Inharmonic Strings, allowing for a wide range of sonic possibilities.

RingsFX introduces a new polyphonic mode, enabling up to 12 notes of true polyphony with support for velocity sensitivity and MIDI MPE mode. The plugin includes 7 modes, including a 'Synthesizer' mode with mutable effects, a Mod-Matrix for real-time manipulation, and the ability to use external audio as an exciter. With features like fluid LFOs, FEGs, mod-able effects, and preset management, RingsFX offers a comprehensive and versatile tool for music production.