The Jesusonic is a fully programmable effects processor for guitar, bass, vocal and general use. Effects can interact with eachother (for example, a volume detection effect can trigger a tremolo effect), or (especially in the case of the Jesusonic CrusFX 1000) with the user (you can assign triggers to effects like loop samplers, for example). A wide assortment of built-in effects are included and users can modify effects or write completely new effects on the fly.

Supports ALSA and OSS, only tested on Debian unstable distribution, but should work on most recent Linux 2.4 and 2.6 systems.