简体中文
EnglishWhat Is OpenAudio?
Updated
OpenAudio (openaudio.webprofusion.com) is a curated directory of open-source audio software. It catalogs audio plugins, standalone apps, software development libraries, and related resources, with each entry linking out to the project's own repository or site. It is a discovery and reference list, not a download host, marketplace, or product you install.
Use it when you want to find open-source tools for music production, audio processing, or plugin development, or when you need working examples of non-trivial audio features to study. If you need commercial support, guaranteed maintenance, or a single polished product, a directory like this is the wrong starting point.
What the site actually contains
The page organizes projects into a small set of categories:
- Audio Plugins — instruments and effects, typically distributed as VST, AU, CLAP, or VST3
- Collections — grouped or bundled project sets
- Audio Apps — standalone applications
- Software Development Libraries & APIs — code you build with rather than run
- Code Samples — reference implementations
- Open Data Resources — datasets and related material
The stated intent is to catalog projects that are "either fully featured or are useful examples which have non-trivial features." That filter matters: the list favors projects worth studying, not every open-source audio repo that exists.
How entries are structured
Plugin entries follow a consistent format, which is what makes the list usable for comparison. Each row gives a description, a type, and a framework:
| Plugin | Description | Type | Framework |
|---|---|---|---|
| 3HSPlug | GM/GS-compatible multi-timbral 8-operator FM/PCM synthesizer | Effect | JUCE |
| ÆLAPSE | Tape-based delay and spring-inspired reverb | Effect | JUCE |
| Aeolus | Pipe organ emulator using additive synthesis | Instrument | JUCE |
| Ambience | Algorithmic reverb built on a 16-channel Feedback Delay Network | Effect | JUCE |
| ANATOMY | Transient/tonal separation with independent multi-effect chains | Effect | JUCE |
| ampli-Fe | Cross-platform VST2 plugin written in Rust | Misc | Rust VST |
Two columns carry most of the decision weight. Type tells you whether a project is an instrument (you play it) or an effect (you process audio through it). Framework tells you what you'd need to build or modify it — JUCE dominates the plugin list, while entries like ampli-Fe show Rust as an alternative. If you plan to fork or contribute, the framework column is effectively a prerequisite.
Who it's for
- Producers and musicians looking for free, open-source instruments and effects to try
- Developers who want reference implementations of specific DSP techniques — for example, a feedback delay network reverb or a cos2 crossfade transient separator
- Contributors who want their own open-source plugin listed
The catalog is broad in genre but shallow in per-project detail. It tells you a project exists and roughly what it does; it does not host downloads, reviews, version histories, or compatibility notes. Expect to visit each project's own page for that.
How to contribute a project
The site accepts new links through GitHub rather than a form on the page itself:
- Go to the OpenAudio issues page at
github.com/webprofusion/OpenAudio/issues. - Fill out the issue template for a new link.
- The change is prepared automatically and reviewed by an editor before it appears.
The template-driven flow means submissions need to match the existing entry format — description, type, and framework — to move through review smoothly.
Limits to keep in mind
The page lists no pricing, licensing terms per project, or account requirements, so treat "open source" as a claim about each linked project rather than a guarantee from the directory. Licenses vary by project and you should check the individual repository. Likewise, the list does not indicate platform support, plugin format coverage beyond what's shown, or whether a project is actively maintained — verify those at the source before committing to a tool for real work.