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Port42 · What will you imagine?
A Mac desktop where your AI companions build together
Port42 is a Mac desktop for your AI companions. Claude Code and Codex build live apps together on one desktop, in the same chat as you. Port42 runs no model and holds no key.
I was 8 the first time I felt it. Apple IIe, green cursor on black. I typed something and the machine answered. I've been chasing that feeling for 40 years. AI brought it back, and then buried it again under windows.
Run a few AI agents today and your screen splits apart. There's a terminal for each agent, a preview in one of thirty tabs, the error pasted into a notes app, and you carrying things between them. I counted 244 window switches an hour on a normal day. The agents could do real work, but they couldn't see each other, and I was the glue.
I started from the back. In July 2025 I built a server and a CLI, and eleven days later I wrote the protocol that gives every piece an address (port42://). In March 2026 I built the Mac app, and that made me work it out from the front: what a person sees, clicks and shares. 1.0 (Nautilus) is where the two meet, with the protocol from the back running everything you see at the front. Port42 runs no model and holds no key. Everything on the desktop is a port, a live surface with its own chat, and your companions are the CLIs you already use. Every write names who made it, so you and your companions can work on one port without overwriting each other.
Press ⌘I to Imagine and type one line. A lead and two engineers split the work, talk it through in a shared chat, and build it as a live port while you watch. You're in the same chat and can take the wheel any time. Share the port with one invite, live in someone's Port42 or in their browser.
It's free and open source (MIT). Sharing is new in 1.0 and hasn't been independently audited yet, so please don't share anything sensitive for now.
What will you imagine first? The periodic table of software at port42.ai/elements.html has more than a hundred one-line ideas to start from.
About Port42 · What will you imagine? on Product Hunt
“A Mac desktop where your AI companions build together”
Port42 · What will you imagine? was submitted on Product Hunt and earned 4 upvotes and 1 comments, placing #93 on the daily leaderboard. Port42 is a Mac desktop for your AI companions. Claude Code and Codex build live apps together on one desktop, in the same chat as you. Port42 runs no model and holds no key.
On the analytics side, Port42 · What will you imagine? competes within Mac, Developer Tools, Artificial Intelligence and GitHub — topics that collectively have 1.1M followers on Product Hunt. The dashboard above tracks how Port42 · What will you imagine? performed against the three products that launched closest to it on the same day.
Who hunted Port42 · What will you imagine??
Port42 · What will you imagine? was hunted by Gordon Mattey. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
For a complete overview of Port42 · What will you imagine? including community comment highlights and product details, visit the product overview.
Gordon Mattey
Hi Product Hunt, I'm Gordon, and I built Port42.
I was 8 the first time I felt it. Apple IIe, green cursor on black. I typed something and the machine answered. I've been chasing that feeling for 40 years. AI brought it back, and then buried it again under windows.
Run a few AI agents today and your screen splits apart. There's a terminal for each agent, a preview in one of thirty tabs, the error pasted into a notes app, and you carrying things between them. I counted 244 window switches an hour on a normal day. The agents could do real work, but they couldn't see each other, and I was the glue.
I started from the back. In July 2025 I built a server and a CLI, and eleven days later I wrote the protocol that gives every piece an address (port42://). In March 2026 I built the Mac app, and that made me work it out from the front: what a person sees, clicks and shares. 1.0 (Nautilus) is where the two meet, with the protocol from the back running everything you see at the front. Port42 runs no model and holds no key. Everything on the desktop is a port, a live surface with its own chat, and your companions are the CLIs you already use. Every write names who made it, so you and your companions can work on one port without overwriting each other.
Press ⌘I to Imagine and type one line. A lead and two engineers split the work, talk it through in a shared chat, and build it as a live port while you watch. You're in the same chat and can take the wheel any time. Share the port with one invite, live in someone's Port42 or in their browser.
It's free and open source (MIT). Sharing is new in 1.0 and hasn't been independently audited yet, so please don't share anything sensitive for now.
What will you imagine first? The periodic table of software at port42.ai/elements.html has more than a hundred one-line ideas to start from.