The GitHub website states: "A free, open-source guitar amp simulator plugin for Linux — with a couple of vocal effects built in too.

AmpForge is a single plugin — not a chain of separate plugins bolted together in a DAW — that hosts a full, reorderable pedalboard-and-amp chain internally, in the spirit of Guitar Rig / BIAS FX. It ships as VST3, LV2, CLAP, and a JACK/PipeWire standalone app, all built from one codebase. A Windows installer (VST3/CLAP/LV2, cross-compiled from the same codebase) is also available for Windows users."

• 12 modules, freely reorderable at runtime: Noise Gate, Compressor, Wah, Screamer, Distortion, Amp (4 voicings — Modern/Vintage/Crunch/Hi-Gain), Cabinet IR loading, Chorus, Phaser, Tremolo, Delay, Reverb
• Tempo-synced Delay/Chorus/Tremolo, a built-in tuner, CPU meter, A/B compare
• Drag-and-drop UI — add pedals from a palette, drag to reorder, real footswitch-style bypass
• 7 factory presets + custom presets you can save/export/import
• VST3, LV2, CLAP, and a JACK/PipeWire standalone — all from one CMake+Ninja build

See the YouTube Video.