Port42 – AI companions that build and act on your Mac (v0.5.0)

Port42 is a native SwiftUI app where AI companions live alongside you in conversations. They build interactive surfaces and act on your system through a single API.

Ports are how companions interact with your machine. One API, two surfaces:

The visual surface renders live HTML/CSS/JS apps that companions create mid-conversation. They render inline, pop out into floating windows, dock, resize, persist across sessions. A companion can build you a dashboard, a file browser, a monitoring tool, and it runs right there.

The action surface lets companions act on your machine directly through the same API. Clipboard, screen capture, terminal, filesystem, headless browser, audio TTS, AppleScript/JXA automation. The model decides what to call and chains actions together.

- "Run my tests."

- "Take a screenshot and describe what you see."

- "Read my clipboard, translate it, copy it back."

We bridge both because computing is still stuck in windows, but conversation is where intent lives.

Requires a Claude subscription (via Claude Code OAuth) or Anthropic API key. Permission prompts per companion, per conversation. E2E encrypted (AES-256-GCM). No cloud dependency. Open source (MIT).

9 days old, rough edges everywhere, but it works, now at v0.5.0. with 40+ releases. Built by one human and many AI companions, thinking together.

https://port42.ai | https://github.com/gordonmattey/port42-native