MIDI Guide, an open‑source catalog of CC and NRPN values, now lists over 300 synth definitions from 52 contributors. The dataset, licensed CC‑BY‑SA 4.0, feeds three real‑world hardware projects and can be dropped into any sequencer or controller. Its growth shows a growing appetite for machine‑parsable MIDI metadata.

The idea for Condukt surfaced in 2019 when the founders traded a Windows‑only workflow for iPad‑centric synthesis. Inspired by the Elektron Analog Four MKII’s performance mode, they built an app that emulates A4‑style knob mapping across a studio’s gear. Heavy hardware requirements and a nascent subscription model forced the project into dormancy.

By 2025, the community had pushed the dataset past 200 instruments, spurring hardware like Neuzeit’s Drop MIDI controller to embed the full library. A recent design overhaul refreshed the site’s Bootstrap foundation, while the growing contributor base—now 52—continues to add new synths. MIDI Guide has moved from niche curiosity to a staple for live riggers.

Because the data is public, developers can integrate it into custom hardware, DAW plugins, or cloud‑based performance tools without licensing headaches. The CC‑BY‑SA term allows commercial use, and the CSV format lowers the barrier for musicians who prefer spreadsheets over code. MIDI Guide’s evolution exemplifies community‑driven tooling.