# dechamps/FlexASIO

A flexible universal ASIO driver that uses the PortAudio sound I/O library. Supports WASAPI (shared and exclusive), KS, DirectSound and MME.

Repository: https://github.com/dechamps/FlexASIO
Canonical: https://ross.abutalabs.com/products/flexasio
Language: C++
License: NOASSERTION
License Family: other
Topics: audio, audio-plugin, asio, asio-drivers, portaudio, wasapi, directsound, mme, c-plus-plus, windows
Last push: 2024-06-27T18:48:58+00:00

## Health v2 (maintenance only)
Score: 23/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 8, longevity 100
- inputs: {"age_days": 4581, "days_push": 797, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 2016, forks 107 (observed 2026-08-28T04:06:05.596688+00:00)

## What it is
FlexASIO is a universal ASIO audio driver for Windows built on the PortAudio library, allowing any ASIO host application to use any Windows sound API (WASAPI shared/exclusive, Kernel Streaming, DirectSound, MME). It is not tied to specific audio hardware and is configurable via a TOML configuration file.

## Use cases
- use ASIO with audio hardware that has no vendor ASIO drivers
- run ASIO applications in shared mode so other apps can play audio simultaneously
- achieve low-latency audio for DAWs like Cubase
- bit-perfect audio streaming bypassing the Windows mixer
- select between WASAPI, KS, DirectSound, and MME backends for a single ASIO driver

## When to choose
- your audio interface lacks its own ASIO drivers
- you need shared-mode ASIO so other applications can use the sound device at the same time
- you want one universal ASIO driver with multiple backend options and configurable settings

## When to avoid
- your audio interface ships with its own vendor ASIO drivers that already work well
- you need ASIO on Linux or macOS - FlexASIO is Windows-only
- you want a simple GUI-only setup without touching configuration files (though FlexASIO GUI exists as a third-party helper)

## Facets
- artifact type: plugin
- maturity: active
- function: audio-processing, plugin-system
- domain: windows, media
- platform: windows
- tags: asio-driver, portaudio, wasapi, kernel-streaming, directsound, mme, low-latency-audio, audio-production, audio

## Member repositories
- dechamps/FlexASIO (main) score 23

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:06:05.596688+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T03:00:42.171810+00:00, confidence not recorded.
  - readme: https://github.com/dechamps/FlexASIO (fetched 2026-08-28T04:06:05.596688+00:00, sha 95101bbd5358)
- Data as of 2026-08-30T08:39:29.467469+00:00.