$ echo $SHELL /bin/zsh $ echo $SHELL /opt/homebrew/bin/fish $ echo $SHELL /bin/bash $ echo"whatever you want." whatever you want._
Use coding agents like ahacker in 1983_
1983 phosphor. 2026 LLMs. One terminal.
Modes
three flavors of nostalgia. pick how warped you want it



Real terminal
Just better looking
a real terminal underneath a real CRT. everything in your dotfiles still works
⬢ build deploy logs db + ~/projects/cooltrt $ cargo watch -x run Compiling cooltrt v1.0.0 Finished dev [unoptimized + debuginfo] Running `target/debug/cooltrt` listening on :1983_
$ uname -m arm64 $ file /Applications/CRT.app/Contents/MacOS/CRT Mach-O universal binary with 2 architectures: [x86_64] Mach-O 64-bit executable [arm64] Mach-O 64-bit executable $ _
What it speaks fluently, since v1
- 24-bit colortruecolor through tmux and ssh
- Ligaturesfira code, jetbrains mono, iosevka
- Sixel graphicsinline previews, plots, gifs
- Tmux passthroughimages survive multiplexing
- Kitty image protocolfirst-class, not an afterthought
- Shell integrationzsh, fish, bash, nushell
- Coding agentsclaude, codex, aider, opencode
- Apple Siliconarm64 native, m-series tuned
What it doesn't by design
- Telemetrywe don't want your data
- Autoupdater pingsyou update when you want
- Subscriptionone purchase, all future updates
- Background daemonsone binary, nothing else running
Seven phosphors
One click to re-tint the page
tap a swatch to repaint the whole page in that phosphor
currently glowing in amber phosphor
Tune the glow
burn-in, bloom, curvature, jitter, ambient light, refresh rate. dial each one in or out



- beta access closes when v1.0 ships
- early users keep the app at $0, forever
- after beta: one-time $9, no subscription
FAQ
> is this just iTerm with a filter?
no. we wrote a native macOS terminal from scratch with full PTY support, ligatures, 24-bit color, tabs, splits, the whole standard. then we wrapped it in a CRT shader pipeline. the filter is the easy part. the terminal is the actual app.
> will it slow my mac down?
basic retro mode is ~0% extra. full crt mode runs the shader on the gpu and uses maybe 4w on an m-series chip. if your laptop fan spins up because of a terminal, please email us and we'll refund and apologize.
> does it work with tmux / nvim / lazygit / atuin / starship / oh-my-zsh?
yes. all of them. it's a real terminal. if it speaks vt100/xterm-256color, it works. the screenshot at the top of this page is claude code in a real shell. nothing is faked for marketing.
> apple silicon?
built for it first. intel comes along for the ride as a universal binary. 28mb on disk, single binary, no helper processes, no autoupdater that phones home at 3am.
> why is it free? what's the catch?
we're in limited beta. you download it, you use it, you tell us when something feels off. when v1.0 ships it'll go to $9 one-time. anyone who grabbed it during beta keeps it free forever. that's the deal, that's the catch.
> is it open source?
not yet. the rendering pipeline will be. the rest pays for the bandwidth of you yelling at us on mastodon.