Aphelion: your AI, at the farthest point from the cloud.
A free, open-source Windows desktop app that runs powerful AI models entirely on the user's own machine. The product page is embedded below — the consulting-side note on why a Penumbra customer should care lives right here.
The same operator who ships consulting work also ships products.
Most consulting sites show a list of past employers and ask you to trust the resume. Aphelion is a different kind of evidence: an end-to-end product — Tauri shell, bundled inference engine, auto-fit model pipeline, branded installer, GitHub Pages landing site, MIT license — released to the public under the Penumbra name. Anyone can download it, run it, and form their own opinion on the engineering quality.
If your work needs a similar shape — a one-installer desktop tool that runs locally and doesn't depend on a cloud account, a domain-specific local-LLM assistant for a regulated industry, a small Tauri + Rust app wrapping an existing engine — that's a real engagement shape I can take on. The product below is the proof I've done the work end-to-end at least once.
The same coherence applies to the brand. Aphelion uses the same corona-eclipse motif, the same JetBrains-Rider HUD chrome, and the same Penumbra family lineage as this site, the streaming overlay, and the Steam-published games. That consistency is a signal: the standards on paid client work and the standards on shipped products are the same standards.
Embedded from penpro.github.io/Aphelion
The frame below is the canonical Aphelion landing page, served live from GitHub Pages. Updates to the product page appear here automatically — there is no duplicate copy of the marketing to keep in sync.
iframe blocked or rendering oddly? Open it directly at penpro.github.io/Aphelion ↗
Free — and staying that way.
Aphelion is free and open source. It's also unsigned — the only reason Windows shows that “unknown publisher” warning — because a code-signing certificate is a recurring monthly cost, and I haven't paid for one. If donations start coming in, that's the first thing they'll go toward. They also help keep Aphelion free: the more they offset what it costs to build and ship, the less chance I'd ever have to charge for it. No pressure — if it's useful to you, anything helps.
No pressure, ever — the app stays free either way. Donations just decide how fast the rough edges (like that signing warning) get smoothed out.
Same eclipse, different orbit.
Aphelion belongs to the same brand family as this consulting site, the streaming overlay, Penumbra Productions (Trigonometry Tools on Steam), and Penumbra.tech (Metaverse: Origins on Steam). The name is the pitch: aphelion is the orbital point farthest from the sun, and the product is the point farthest from the cloud. The visual language — corona teal, void purple-black, HUD brackets — is shared on purpose, so that anyone landing on any Penumbra surface sees the same operator behind it.
Want a similar product built for your business?
Download Aphelion to see the bar I hold for shipped software, then book a 30-min intro to talk about a custom local-AI tool, a Tauri + Rust desktop app for your team, or any other engagement that uses the same engineering shape.