VCV Rack vs Cardinal
Cardinal is a fork of VCV Rack built to be completely free and to run as a plugin. Same modular concept, different licensing philosophy and a different deployment story.
Side by side
| VCV Rack | Cardinal | |
|---|---|---|
| Runs as a plugin | Rack Pro (paid) | Yes — free |
| Licence | GPL core, proprietary modules exist | Fully open |
| Module library | Largest, incl. commercial | Bundled open modules only |
| Cost | Free standalone; Pro is paid | Free |
| Module installation | Plugin manager | Bundled — no separate installs |
| Self-contained | No | Yes — everything included |
| Language | C++ | C++ |
| License | GPL-3.0-only | GPL-3.0-or-later |
| Platforms | macOS Windows Linux | macOS Windows Linux Web |
| First released | 2017 | 2022 |
| Maintained | Yes | Yes |
Where they actually differ
Plugin use is free in Cardinal
Running VCV Rack inside a DAW requires Rack Pro, which is paid. Cardinal ships as a VST/CLAP/LV2 plugin for free. If your workflow is DAW-centred, that alone may decide it.
Cardinal bundles, VCV installs
Cardinal ships with a large collection of open modules built in, so a patch you make works anywhere Cardinal is installed. VCV downloads modules individually through its manager, which gives you far more choice and makes patches dependent on what the other machine has.
The commercial module ecosystem is VCV only
Many well-regarded modules are commercial and VCV-only, and Cardinal cannot include them because it is strictly open. If a specific paid module is the reason you are here, Cardinal cannot help.
Licensing purity is the point of Cardinal
Everything in it is open source, which matters for Linux distributions, for redistribution, and for anyone who wants no proprietary components. VCV mixes an open core with a proprietary ecosystem.
Which should you choose?
Choose VCV Rack when…
- You want the largest possible module selection
- You want specific commercial modules
- You work standalone rather than in a DAW
- You want the mainstream option with most tutorials
Choose Cardinal when…
- You want a free DAW plugin
- You want fully open source throughout
- You want patches that work without installing modules
- You are on Linux and want no proprietary parts