Cog

Cog is a free, open‑source audio player designed for macOS. It provides playback of a wide range of formats, including Ogg Vorbis, MP3, FLAC, Musepack, Monkey’s Audio, Shorten, WavPack, AAC, Apple Lossless and others, relying on lib libraries and TagLib for decoding and metadata handling. The player offers features such as smart playlist entry removal and HTTP 1.1 streaming, allowing users to manage and listen to local and network‑based audio collections.

The software is targeted at macOS users who need a lightweight, extensible player without proprietary restrictions. Its open‑source nature lets developers inspect, modify, and contribute to the codebase, while the free tier makes it accessible to anyone seeking a cost‑free solution for everyday music listening.

Although development has ceased, the project remains available through community mirrors, and the source repository continues to be hosted on Git,. The original forums are archived in read‑only mode, preserving historical discussion for reference.