Retrokits is a Dutch company based in Edam, Netherlands, founded in 2017 by developers with decades of experience in MIDI hardware and software. The brand focuses on compact, intelligent MIDI tools designed to bridge connectivity gaps between modern and vintage electronic instruments, computers, and modular gear.

Their product line centers on a small family of smart MIDI utilities. The RK-002 is a programmable MIDI cable with a built-in microcontroller that can process, transform, and generate MIDI data through swappable firmware. The RK-006 is a portable USB MIDI/Gate hub offering multiple MIDI outputs, inputs, and analog gate/DINSync connections for hybrid setups combining DAWs, synths, and Eurorack. The RK-008 is a realtime multitrack MIDI recorder and sequencer. The company also makes the Retrovision miniature USB display and various adapters and cables.

Retrokits sells primarily direct-to-consumer through its own web shop, with additional distribution through boutique synth retailers including MIDI Amsterdam, Schneidersladen, Signal Sounds, Mission Synths, and Perfect Circuit. The brand is commonly discussed on electronic music communities such as Elektronauts and MOD WIGGLER, where users share custom firmware builds and integration tips for instruments like the Elektron Digitakt and Korg Volca series.

Retrokits has 4 products cataloged on Equipboard, including MIDI Interfaces and Digital.