Tatami

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macOS workspace manager with BSP window tiling

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# Tatami <img src="Resources/Marketing/app-icon.png" align="right" height="128" />

[![Latest release](https://img.shields.io/github/v/release/PangMo5/Tatami?sort=semver)](https://github.com/PangMo5/Tatami/releases/latest)
[![Download](https://img.shields.io/github/downloads/PangMo5/Tatami/total)](https://github.com/PangMo5/Tatami/releases)
![macOS 14+](https://img.shields.io/badge/macOS-14%2B-blue)
[![License: GPL-3.0](https://img.shields.io/badge/License-GPL%203.0-blue)](https://raw.githubusercontent.com/PangMo5/Tatami/main/LICENSE)

A macOS workspace manager with BSP window tiling.

Tatami groups your apps into virtual workspaces you switch between with a
keystroke or a configurable trackpad gesture, and tiles their windows
automatically with a binary space partitioning (BSP) engine. No SIP changes and no shell
scripting required.

## Screenshots

Full size:
<a href="Resources/Marketing/screenshots/guided-setup.png">Guided Setup</a> ·
<a href="Resources/Marketing/screenshots/workspaces.png">Workspaces</a> ·
<a href="Resources/Marketing/screenshots/borrow.png">Borrow</a>

## Demo

<a href="https://pangmo5.dev/Tatami#demo">▶ Watch the demo</a>

Recorded on an early version. It will be re-recorded for a later release.

## Features

### Workspaces

- **Virtual workspaces:** Group apps with per-workspace assignments.
- **Flexible switching:** Use a hotkey, trackpad gesture, or recent-workspace action.
- **Configurable gestures:** Bind every direction of a three- or four-finger swipe to any shortcut action, including profile- and workspace-specific commands.
- **One key per workspace:** Hold the switch, assign, or borrow modifier with a **key equivalent**. The same keys also drive recent, next, and previous targets, while any action can take an explicit override.
- **Optional switching behaviors:** Enable loop-around, skip-empty, or follow-app-focus.
- **Auto-open:** Launch assigned apps when a workspace activates and reopen them on re-entry if their window was closed.
- **Per-display workspaces:** Pin a workspace to a display or have dynamic workspaces open under the mouse. Each display keeps its own active and recent workspace across relaunches, while next/previous and recent navigation can independently stay local or span every display.
- **Cross-display control:** Jump focus between displays or move the focused app to another workspace.
- **Shared apps:** Add apps that should join every workspace.

### Profiles

- **Independent profiles:** Group workspaces and switch the whole set at once. Each profile keeps its own workspaces, app assignments, and shortcuts.
- **Fast profile switching:** Switch by hotkey or from the menu bar. Every display re-tiles for the new profile, and Tatami returns to the right profile after relaunch.
- **Display-aware activation:** Auto-activate a profile by monitor count or by specific displays being connected or disconnected. Tatami warns when rules overlap at the same priority.
- **Profile identity:** Give each profile an SF Symbol shown in the sidebar, menu bar, and profile-switch feedback.
- **Reviewable copying:** Use **Copy from** to compare another profile or workspace, then keep or skip each app and settings change.

### Borrow: compose two workspaces

- **Side-by-side composition:** Pull another workspace beside the current one, dock it to any screen edge, and tile both blocks independently. Windows cannot cross the boundary.
- **Live and bidirectional:** The borrowed block is the real workspace, so edits persist back to it.
- **Directional placement:** Press the borrow modifier with a workspace key, then use `h`, `j`, `k`, `l`, or an arrow. You can also set a default edge and size globally or per workspace.
- **Cross-boundary focus and switching:** Directional focus and MFF move between blocks. Host and borrowed tiled windows share one app / window switching order until the borrowed workspace is returned. Activating a borrowed workspace switches to it fully, borrowing it again returns it by default, and `esc` cancels placement.
- **Visible ownership:** Borrowed windows show the borrowed workspace's icon.
- **Scratchpads:** Borrow-only workspaces stay out of regular switching, never activate alone, and auto-open their apps when summoned.

### Window tiling (BSP)

- **Automatic BSP layout:** Insert new windows at the shallowest tile.
- **Keyboard operations:** Focus, swap, and resize directionally with vim-like `h`, `j`, `k`, and `l` keys.
- **Interactive window switching:** Tap the window-switch shortcut for an immediate switch, or hold its modifier for a compact app / window switcher. It shows each window's current state and lets you choose the exact target with the keyboard or pointer.
- **Zoom and splits:** Fill the workspace with one window or toggle split orientation.
- **Tree transforms:** Rotate, mirror, and balance the layout.
- **Drag editing:** Swap or re-insert a window with a live placement preview. Manual edge resizing synchronizes back into the tree.
- **Persistent layouts:** Keep each workspace's tree and ratios across workspace switches, relaunches, and system sleep.
- **Configurable spacing:** Set inner and outer gaps.

### Always on Top

- **Per-workspace or shared:** Keep an app on top in one workspace or add it to Shared Apps to keep it on top everywhere.
- **No SIP changes:** Tatami uses always-on-top ScreenCaptureKit mirrors, then hands you the real window when you interact with it.
- **Predictable stacking:** Multiple always-on-top windows stack by focus recency. This requires Screen Recording permission.
- **Leave As Is:** Keep an app as a workspace member for auto-open, focus, focus-follows-mouse, and window switching while preserving its current position and size. This mode needs no mirroring or Screen Recording.

### Focus & cursor

- **Two explicit focus models:** Focus-follows-mouse gives the window under the pointer keyboard focus. Mouse-follows-focus moves the pointer after Tatami changes windows, including switching to Always on Top, Shared Always on Top, or Leave As Is windows.
- **Close-window refocus:** Return to the most recently used remaining window.
- **Cursor control:** Optionally hide the cursor during a workspace switch.

### Interface & config

- **Five interface languages:** Use Tatami in English, Korean, Japanese, Simplified Chinese, or Traditional Chinese, following your macOS app-language preference.
- **Customizable menu bar:** Show the active workspace icon or name and, when relevant, the active profile icon or name.
- **Adaptive on-screen feedback:** Compact spring feedback confirms workspace, profile, Always on Top, membership, layout, and Borrow actions. The app / window switcher shows each target's state and works with both keyboard and pointer.
- **Workspace icons:** Choose a per-workspace SF Symbol.
- **Native settings:** Configure Tatami in SwiftUI.
- **skhd-style shortcuts:** For example, `ctrl + alt - h`.
- **Plain TOML:** Edit `~/.config/tatami/config.toml` with XDG support and live reloads.
- **Scriptable CLI:** Run commands such as `tatami activate <workspace>` and `tatami list-workspaces`.
- **Automatic updates:** Receive releases through Sparkle.

### Guided setup

- **Learn by doing:** First launch walks through Workspaces, switching and gestures, BSP tiling, Borrow and scratchpads, Always on Top / Leave As Is, MFF / FFM, and app / window switching in a safe virtual display.
- **Built from this Mac:** Start from running-app metadata and connected-display geometry, then organize apps around repeatable work rather than generic categories. No screen contents are captured.
- **Optional AI planning:** Review a task-oriented proposal from ChatGPT, Claude, Gemini, another AI, or the on-device Apple Intelligence model on supported Macs. AI output remains a proposal until you apply it.
- **One cumulative practice surface:** Real shortcuts and trackpad gestures control the preview, and every command learned earlier remains available in later lessons.
- **Draft first:** Guided Setup does not move real windows or write `config.toml` until **Apply Setup**. Reopen it any time from **Settings → General**.

## Requirements

- macOS 14.0 or later
- Accessibility permission
  (System Settings → Privacy & Security → Accessibility)
- Screen Recording permission, only if you use Always on Top. Those windows'
  always-on-top mirrors are ScreenCaptureKit captures
  (System Settings → Privacy & Security → Screen Recording)

## Installation

### Homebrew

```sh
brew install --cask pangmo5/tap/tatami
```

Or download the signed & notarized `.dmg` from the
[latest release](https://github.com/PangMo5/Tatami/releases/latest).

### Build from source

```sh
brew install tuist                     # or: mise install
tuist install && tuist generate --no-open
open Tatami.xcworkspace
```

## Command line

Tatami ships a `tatami` CLI inside the app bundle. Install it from
**Settings → General → Command Line → Install**. This symlinks `tatami` into
`/usr/local/bin` (you'll be asked for your password once). Then:

```sh
tatami list-workspaces # workspace names in the active profile
tatami list-apps <workspace> # bundle IDs assigned to a workspace
tatami activate <workspace> # activate a workspace
tatami version # version of the running app
```

The CLI talks to the running app over a local socket, so Tatami must be
running. (Homebrew installs are detected automatically.)

## Configuration

Settings live in `~/.config/tatami/config.toml`, grouped into tables such as
`[settings.layout]`, `[settings.focus]`, `[settings.gestures]`,
`[settings.shortcuts]`, and so on. Workspaces, their app assignments, and
shared apps are stored in the same file. Edits made in the app or by hand are
picked up live.

See [docs/CONFIGURATION.md](docs/CONFIGURATION.md) for the full reference:
every key, its default, and the shortcut syntax.

## Tech stack

- **Tuist:** Project generation
- **The Composable Architecture (TCA):** App architecture
- **swift-sharing:** Cross-feature state sharing
- **swift-collections:** Ordered sets, dictionaries, and deques on tiling hot paths
- **swift-toml:** Config persistence
- **swift-yyjson:** Fast JSON for the layout store and CLI protocol
- **Magnet:** Carbon-based global hotkeys
- **SFSafeSymbols:** Type-safe SF Symbol catalog
- **Sparkle:** App updates

## Acknowledgements

Tatami is inspired by [FlashSpace] by Wojciech Kulik (the virtual
workspace-switching concept) and [yabai] by koekeishiya (the window-tiling
model). See [NOTICE.md](NOTICE.md) for attribution.

## License

[GPL-3.0](LICENSE).

[FlashSpace]: https://github.com/wojciech-kulik/FlashSpace
[yabai]: https://github.com/koekeishiya/yabai

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