Rebel Technology is a London-based music electronics collective founded in 2009 by software developer and electronics designer Martin Klang. The company specializes in open-source, programmable DSP-based instruments aimed at musicians, hackers, and programmers who want hardware that can be reshaped in software. Schematics and firmware for many of their products are published on GitHub, and a community-driven patch library lets users share and load custom effects and synth voices onto the company's hardware.

The brand's flagship platform is the OWL, an open programmable engine that powers the OWL Pedal stage effects unit, the OWL Modular Eurorack module, and the Lich module. These devices can run a wide range of user-programmable patches — from reverbs and granular effects to oscillators and sequencers — written in C++, FAUST, Pure Data, or Max/Gen. The Witch is a compact standalone polyphonic synthesizer with MPE support that uses the same programmable DSP engine.

Alongside the OWL family, Rebel Technology produces a line of utility-focused Eurorack modules including Stoicheia and Klasmata (Euclidean rhythm generators), Logoi (clock divider/multiplier), Mix 02 (mixer), Tonic, and CLK. Their reputation in the modular and DIY synth community centers on hackability and open hardware rather than fixed-function instruments.

Rebel Technology has 2 products cataloged on Equipboard, including Modular Synthesizers.