Stop flying blind
with AI tools

Mistline shows you exactly what your AI coding assistant is creating, changing, and breaking. In real time. On your Mac. No terminal needed.

Get Mistline · $19 Launch price macOS · One-time purchase · Regular $29

AI coding tools are powerful.
But they don't show you what they're doing.

You ask your AI to build a feature. It creates a dozen files, modifies a few more, and leaves behind some that nothing references. The output flies past too fast to follow. You're left wondering: what just happened?

Your files stay on your Mac.

No accounts. No analytics. No telemetry. The only network requests Mistline ever makes are license activation and update checks — everything else, including your file contents, project data, and activity, stays entirely on your machine.

Everything you need to stay aware

Mistline sits alongside your IDE as an always-on companion. Not a replacement.

Visual file tree

Color-coded by file type with real-time updates as AI tools create and modify files. Collapse, filter, search. All instant.

Live activity feed

See every file create, modify, and delete as it happens. No more guessing what your AI tool just changed.

Instant file preview

Click any file to preview it. Markdown, HTML with full CSS, JSON (pretty-printed), CSVs, images, PDFs, video, audio, spreadsheets, and zip contents — all without launching another app.

Search files & content

Cmd+K to search filenames and folders, or search inside file contents. Results reveal in the tree with a smooth highlight.

Video coming soon

Duplicate file warnings

Same filename in two folders? Mistline spots it instantly so your AI tool stops confusing components/Button.tsx with shared/Button.tsx.

Video coming soon

Ghost file detection

Broken imports after an AI refactor? Mistline flags every reference that points at a file that no longer exists — plus scratch files like .tmp and .bak your tools leave behind.

File annotations

Add notes to any file or folder. Remind yourself what something does, flag things to revisit, leave context for later.

Video coming soon

Git changelog

Browse recent commits with expandable diffs. Green for additions, red for deletions. See what changed without leaving Mistline.

Search your project from anywhere

Press a global hotkey from any app and Mistline's command palette appears instantly. Search files, search content, then act.

Enter Open in Mistline
Cmd+Enter Open in editor
Cmd+Shift+Enter Reveal in Finder
Cmd+C Copy path
layout Files
Layout.svelte src/lib/components
layout.css src/styles
layout.config.js config

Plus everything you'd expect

Pin to foreground
Dark & light themes
Custom shortcuts
One-click path copy
Open in editor
Reveal in Finder
Resizable panels
Focus mode
Persistent settings
Recent projects
Dotfile toggle
Lightweight & fast

Built for anyone working with AI on their Mac

Whether you're a developer running Claude Code or Cursor, a knowledge worker using Claude Cowork to organize case files and reports, or a first-time builder shipping your very first app with AI, Mistline gives you the visual awareness that other tools just don't. If your AI is creating, changing, or moving files on your Mac, Mistline watches them all so you don't have to.

Built with Rust and Tauri. Lightweight, fast, and not Electron.

Claude Code Claude Cowork Cursor Codex Aider Windsurf

Frequently asked questions

Mistline is a lightweight Mac app that gives you real-time visual awareness of your files while you use AI coding tools. Think of it as a file companion that runs alongside whatever you're using, showing you what's being created, changed, and left behind. No coding background required.

Any AI tool that creates, modifies, or moves files on your Mac. Claude Code, Claude Cowork, Cursor, Codex, Aider, Windsurf, Copilot, and any other assistant that touches your file system. Mistline watches the files, not the tool, so it works with anything.

Yes. Your files, project data, annotations, and activity all stay on your machine. Mistline has no accounts, no analytics, and no telemetry. The only network requests it ever makes are license validation and update checks. See our privacy policy for the full breakdown.

macOS only right now. Windows and Linux support is planned for a future release.

The price goes up from $19 to $29. That's it. There's no annual fee, no subscription. Your purchase includes all v1 updates forever. If a major v2 ever ships down the road, that'll be a separate paid upgrade, but you're never forced to take it.

I'm Trevor, a solo developer based in the US. I've spent years working with customers in software, and I built Mistline because I kept losing track of what my AI tools were doing to my files. Your files never leave your Mac — the only network requests Mistline makes are license validation and update checks. See the privacy policy for the full story.

Yes. 14-day refund policy, no questions asked. Email hello@mistline.app with your order details.

Simple pricing. Own it forever.

Pay once. No subscription, no annual fee. All v1 updates included for free.

Launch price
Mistline
$19
$29 regular price One time, never again
  • Full app, all features included
  • macOS (Apple Silicon & Intel)
  • All v1 updates included, free forever
  • Yours to keep, never stops working
Get Mistline