Rakarrack is a richly featured open source multi-effects processor emulating a guitar effects pedalboard.
Rakarrack is a JACK app. Presets and user interface are optimized for guitar, but Rakarrack processes signals in stereo while it does not apply internal band-limiting filtering, and thus is well suited to all musical instruments and vocals.
Rakarrack is free and open source software.
Key Features
- 42 different effects including compressor, expander, noise gate, graphic equalizer, parametric equalizer, exciter, shuffle, convolotron, valve, flanger, dual flange, chorus, musicaldelay, arpie, echo with reverse playback, musical delay, reverb, digital phaser, analogic phaser, synthfilter, varyband, ring, wah-wah, alien-wah, mutromojo, harmonizer, looper and four flexible distortion modules including sub-octave modulation and dirty octave up.
- Order of effects are configurable.
- State of rack can be saved as presets which in turn are stored as banks.
- Rack has an integrated tuner and can receive MIDI control orders and can send MIDI notes to MIDI devices like synthesizers.
- Built from modules found in the software synthesizer ZynAddSubFX.
- Presets and user interface are optimized for guitar.
Website: rakarrack.sourceforge.net
Support: FAQ
Developer: AJosep Andreu. Ryan Billing, Douglas McClendon, Arnout Engelen, and contributors
License: GNU General Public License v2.0

Rakarrack is written in C. Learn C with our recommended free books and free tutorials.
Related Software
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| Songwrite 3 | Music score and songbook editor |
Read our verdict in the software roundup.
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