Your Mac deserves
a better file manager.
Seiz is a native macOS file manager built in pure Swift. Multi-pane layouts, command bar, built-in terminal, local AI. Buy once for $29. No subscription. No Electron. No cloud.
The Problem
Finder is fine for your parents.
You've outgrown it. Here's how you know.
Finder hasn't changed.
macOS has had three major redesigns. Finder's column view looks exactly the same as it did in 2005.
Side-by-side panes in Finder.
You can't open two folders next to each other. Every drag-and-drop is a juggling act with overlapping windows.
Apps just to manage files.
Batch rename. SFTP client. Archive viewer. Hex editor. You've got five apps open for what should be one.
Column width auto-sizing.
Finder truncates filenames. Always. Every column, every time. You drag manually, it forgets on the next visit.
Real search in Finder.
No fuzzy matching. No regex. No multi-condition filters. Spotlight returns results you didn't ask for.
Your workflow. Your layout.
Finder has one layout mode with no real customization. Power users deserve a tool that adapts to how they work.
Features
Everything you wished Finder could do.
Rename 100 files in seconds.
Select any number of files, stack up rules — add a counter, swap out text, prepend a date — and watch a live before/after preview update with every keystroke. When it looks right, hit Apply. Undo brings everything back instantly.
- Rule-based: numbering, text replace, date stamp, case change, and more
- Live preview updates as you type — no surprises on Apply
- Works on hundreds of files without freezing the UI
- Full undo/redo — one keystroke to revert the entire batch
Your keyboard is faster than your mouse.
Hit ⌘K anywhere in Seiz. A floating command bar appears — glass blur, instant. Type what you want: copy, move, zip, rename. Fuzzy matching means you don't need to spell perfectly. Press Enter.
- 60+ commands accessible instantly from anywhere
- Fuzzy search with typo tolerance — 'compres' finds 'Compress'
- Arrow keys to navigate, Enter to execute, Escape to dismiss
- No menus to dig through, no right-click context hunting
Up to 4 panes. Tabs in every one.
Real multi-pane layouts — not just two floating windows. Each pane is independent with its own tabs, sort order, and view mode. Save entire layouts as Workspaces. Visor mode drops Seiz down like a console from the top of your screen.
- Single, dual, triple, and quad-pane layouts
- Drag files and tabs between panes freely
- Workspaces: save and restore full layouts in one click
- Visor mode: system-wide hotkey summons Seiz from the top
Performance
Native Swift. Not Electron.
Most "modern" file managers are web apps in a native costume. Seiz is built with Swift 6 and SwiftUI + AppKit — the same stack Apple ships their own apps with.
Your file manager should be the fastest app on your Mac. Not the heaviest.
Local AI
Smart features. Zero cloud.
Every AI feature in Seiz runs 100% locally on your Mac — using Ollama or Apple MLX. Your files never leave your machine. No API keys. No internet. No data collection.
Smart Rename — Live Preview
Files named by what they contain.
Select a file. Seiz reads the content and suggests a professional filename. You review it, approve it, rename it. The AI suggests — you decide.
Search by meaning, not filename.
Type "beach vacation photos" and Seiz finds images that look like beach photos — even if they're named IMG_001.jpg. Full-meaning document search across your entire drive.
500 unsorted files. One click to organize.
Drop 500 unsorted files into a folder. Tell Seiz to group them. AI clusters files by project, topic, or type and suggests folder names. Review before applying.
100% on-device. Works offline. Your files are your business.
Ollama (Phi-3, Llama-3, Mistral) · Apple MLX (Apple Silicon) · Custom model support
Testimonials
Loved by power users.
“I've tried every Mac file manager out there. Seiz is the first one that actually feels faster than Finder — and the AI rename feature alone saves me hours every week.”
Alex Chen
Full-Stack Developer
“The dual-pane layout with tabs is exactly what I needed. Moving files between projects used to be painful. Now it's instant. Worth every penny.”
Sarah Kim
UX Designer
“Finally a file manager that respects my privacy. Local AI, no telemetry, no account required. This is how software should be made.”
Marcus Weber
Security Engineer
Comparison
See how Seiz stacks up.
| Feature | Finder | ForkLift | Path Finder | Commander One | Seiz |
|---|---|---|---|---|---|
| Auto-size columns | |||||
| Command palette | |||||
| Local AI rename | |||||
| Semantic search | |||||
| Native Swift + SwiftUI | |||||
| Dual pane | |||||
| Tabs | |||||
| Dark mode first | |||||
| Built-in terminal | |||||
| Price | Free | $32 | $40 | $60 | $29 |
Pricing
One price. No surprises.
Pay once. Use forever. No account required. No tracking. No analytics. No subscription — ever.
14-day free trial · No credit card required
After 1 year, the app keeps working forever. Optionally renew updates for $19/year. Also coming to Setapp.
Everything included
- All features — nothing locked behind tiers
- Multi-pane layouts (1–4 panes with tabs)
- Command Bar with fuzzy search
- Built-in terminal, hex viewer, markdown editor
- Batch rename with regex support
- QuickLook, Inspector, Filmstrip mode
- Remote connections (SFTP, S3, WebDAV, SMB, FTP, B2)
- Local AI (Smart Rename, Semantic Search, Batch Grouping)
- 4 themes — Dark, Light, High Contrast, System
- Custom keyboard shortcuts
- Workspaces & Visor mode
- 1 year of free updates included
- macOS 14+ Sonoma required
FAQ
Frequently asked.
Early Access
Get notified when Seiz launches.
Join the waitlist for early access and 30% off at launch. No spam — ever.