ElectroSmash - Pedal-Pi: Raspberry Pi ZERO Guitar Pedal
ElectroSmash - pedalSHIELD Arduino Guitar Pedal.
NAMM 2017: Is the MOD Duo open-source multi-effects 'the definitive stompbox'? | MusicRadar
Multi-effects Guitar Pedal — The MagPi magazine
MacroFAB FX Development Board is an Open source Audio Electronics Prototyping Platform (Crowdfunding) - CNX Software
OpenStomp: Open Source, Meet the Guitar World - Premier Guitar
MOD Duo: Building an open source guitar stomp box | Opensource.com
OWL Pedal – Rebel Technology
MOD Duo - A Linux-based open-ended effect system in a pedal - gearnews.com
MOD Duo - A Linux-based open-ended effect system in a pedal - gearnews.com
GitHub - lucaong/guitarstack: Digital guitar effects right in your browser!
CONSOLE open source cartridge based fx platform for guitar by devi ever » Sue me. — Kickstarter
Open source JUCE based guitar distortion plugin released - News and Announcements - JUCE
Open Source Guitar Pedal with Arduino Mega - Hackster.io
Open Source Analog Effects Pedal | Hackaday.io
Electro-Smith - More than just an evaluation platform, Daisy Petal is the ultimate utility guitar pedal. From resonant filterbank to euphoric reverb, exciting new sounds are available via our open-source library. Link