xACT

xACT is a macOS‑only toolkit for converting and compressing audio files between a variety of lossless and lossy formats. It supports encoding to and from FLAC, Apple Lossless, MP3, WavPack, DSD (DSF/DFF), APE, and other common containers, preserving metadata such as tags, album art, and gapless playback information. The graphical interface provides batch processing, automatic naming, and options for logging and de‑emphasis tasks.

The software is targeted at users who need to manage large music collections on Mac computers, including those with Intel or Apple Silicon processors. It handles 24‑bit audio, waveform extensible files, and can join multi‑track sources, while offering utilities like rsync‑based directory selection and MD5 checksum handling.

xACT is maintained as a stable release series, with recent updates fixing tagging bugs, updating bundled encoders (FLAC 1.5.0, LAME 3.100, WavPack 5.5.0), and improving compatibility with newer macOS versions and Apple Silicon hardware.