Helium Terminal

1 min read Original article ↗

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A tiny macOS terminal for coding agents, built on libghostty.

Install · GitHub

Helium Terminal: a sidebar with an auth tab group, a collapsed docs group, colored labels, folders and a listening port. The tab where an agent is working has a slowly pulsing blue edge, the tab waiting on the user blinks orange, and a finished deploy shows a green edge. Next to it, the agent's transcript, a dev server and a shell in split panes

The sidebar shows every tab's branch, folder and ports. A tab pulses blue while its agent works, and one waiting on you blinks orange until you answer. Tabs split, group and take labels, and your Claude Code and Codex sessions come back after a quit.

HeliumiTerm2 3.7
Size15 MB176 MB
Launch~250 ms~570 ms
Idle memory62 MB203 MB
Idle CPU~0.2%~2%

Apple Silicon, median of five launches. Script.

brew install --cask yowmamasita/tap/helium-terminal
zb install yowmamasita/tap/helium-terminal

Apple Silicon, macOS 13 or later.