steventsvik / Tellurion

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 Real app, real agents, demo projects. The full tour, as a GIF. Watch it in higher quality . 
**Tellurion is a macOS terminal for developers who run several AI coding agents,
like Claude Code, Codex, Gemini CLI and Copilot CLI, across several projects at once.** It's a fork of
Ghostty, the fast native terminal, that shows what every agent is
doing, live: the code it's writing as it writes it, where it is in your project, what part
of your backend it touches, and when it needs you. Agents share what they learn about each
project, hand work to each other, and leave their changes in a review inbox you can undo
from.
Everything Ghostty does still works, and your Ghostty config works as-is. This fork tracks
official Ghostty releases and adds its features on top.
> **Tellurion was called GhosttyEXTREME.** Same app, same features; if you have
> GhosttyEXTREME installed, Check for Updates… brings you to Tellurion.
> [!NOTE]
> Unofficial fork. Not affiliated with or endorsed by the Ghostty project.
 [code] 
 Apple silicon, macOS 13 or newer. Free and open source (AGPL-3.0). No account, no telemetry. 
## Watch your agents work, live
Run Claude Code, Codex, Gemini CLI, Copilot CLI or another agent in a tab, the way you
already do. Tellurion follows each one as it works.
| As the agent… | …you see |
|---|---|
| **starts a task** | Its card in the sidebar shows the task, a working spinner and a timer, and the corners of its terminal breathe. A snapshot of your project is saved, so the turn can be undone. |
| **reads a file** | The editor opens that file at the lines it read, and the file lights up cyan on the code map. |
| **edits a file** | The change types itself into the editor with the lines highlighted, the file turns orange on the map, and the turn's diff count goes up. |
| **thinks or replies** | The agent panel shows its thinking, messages and every tool call as a timeline, sub-agents included. |
| **touches your backend** | The Worker, database or bucket that code belongs to lights up in the Backend view. |
| **starts a dev server** | The server moves into its own tab and keeps running after the agent is done. |
| **needs you** | Its card turns amber with **Allow** and **Deny** buttons and jumps to the top of the command palette and Mission Control. You get a notification you can answer from, and a Dock badge. |
| **finishes** | Its changes land in Review with the full diff. Not what you wanted? **Undo last turn** puts your files back. |
Nine agents report live status: **Claude Code** and **Codex**, plus **GitHub Copilot CLI,
Droid, Gemini CLI, Antigravity (agy), Kiro CLI, Cursor CLI and OpenCode**. The welcome window
connects Claude Code and Codex in one click, and **Check Setup** offers **Connect** for each
of the others it finds on your Mac. Each hook only observes: it never approves, blocks or
changes anything, and any settings file it touches is backed