Castport on Mac
Native desktop builds for macOS — install once, run offline, no browser tab or subscription required.
Setup on Mac
Download the installer
Download the latest Castport installer from the GitHub Releases page (https://github.com/bensblueprints/castport-mvp/releases) — or build it yourself from the MIT source.
Install
Run the installer — one click, no terminal, no account to create.
Run it locally
Castport runs 100% on your machine — no account, no telemetry, and it keeps working with the Wi-Fi off.
What works offline: everything. Castport is a desktop app — once it's installed, no feature needs a connection to us.
Castport on Mac — honest answers
Is it really free on GitHub?
Yes — MIT source at github.com/bensblueprints/castport-mvp, always. $99 buys the packaged installer, guided deploy and lifetime updates.
Will Apple and Spotify actually accept the feed?
That's the part we sweated: exact enclosure byte counts (not estimates), permanent GUIDs, real probed audio durations, and proper HTTP Range support on audio — the exact details that get naive feeds rejected. Set BASE_URL to your real domain first; localhost feeds are rejected.