Flutter Demon
A blazingly fast TUI for Flutter development
Website ·
Documentation ·
Keybindings ·
Configuration
Flutter Demon (fdemon) is a high-performance terminal UI for Flutter development. Run apps, view logs in real-time, hot reload on file changes, and manage multiple device sessions — all from your terminal.
curl -fsSL https://raw.githubusercontent.com/edTheGuy00/fdemon/main/install.sh | bashThis downloads the latest release binary for your platform and installs it to $HOME/.local/bin.
See the installation guide for version-specific installs, custom directories, Windows, and building from source.
- Real-time log viewing with level/source filtering, regex search, and error navigation
- Auto hot reload on file save with smart debouncing
- Multi-device sessions — run on up to 9 devices simultaneously
- Built-in DevTools — widget inspector, performance monitor, network monitor
- New Session Dialog — device selection, launch configs, dart defines
- Link Highlight Mode — open files from log traces directly in your editor
- Smart project discovery — auto-detects Flutter apps, plugins, and workspaces
cd /path/to/my_flutter_app
fdemonSelect a device, configure launch settings, and press Enter to launch.
Press d to enter DevTools mode. Three panels are available:
| Key | Panel | Description |
|---|---|---|
i |
Widget Inspector | Browse the widget tree, view layout details and source locations |
p |
Performance | Real-time FPS, memory usage, jank detection, allocation table |
n |
Network | HTTP request capture, detail tabs, filtering, recording controls |
Debug overlays (Ctrl+r repaint rainbow, Ctrl+p performance, Ctrl+d debug paint) and browser DevTools (b) are also available.
| Key | Action |
|---|---|
r / R |
Hot reload / Hot restart |
d |
Enter DevTools |
+ |
New session |
1-9 / Tab |
Switch session |
f / F |
Cycle level/source filter |
/ |
Search logs |
e / E |
Next/previous error |
L |
Link highlight mode |
q q |
Quit |
Full reference: fdemon.dev/docs/keybindings
Flutter Demon works out-of-the-box with sensible defaults. Optionally configure via:
.fdemon/config.toml— Behavior, watcher, UI, editor settings.fdemon/launch.toml— Launch configurations (device, mode, flavor, dart defines).vscode/launch.json— Auto-imported (read-only)
Full reference: fdemon.dev/docs/configuration
- Flutter SDK in your PATH
- A terminal with Unicode support
Contributions are welcome! See CONTRIBUTING.md for guidelines.
cargo build && cargo test && cargo clippyBusiness Source License 1.1 — free for all use except providing a commercial hosted Flutter development service. Converts to AGPL-3.0 after four years.
Made with 🔥 for Flutter developers
