Local WiFi File Transfer FTP HTTP Server App Android

DropLine Server turns any Android phone into a fast, local Wi-Fi file server. Share files between your phone, laptop and other devices using a browser (HTTP) or an FTP client, with no USB cables and no external cloud services.

Key Features

• Wi-Fi FTP server – Full FTP server running directly on the device so you can browse, upload and download files from tools like FileZilla, WinSCP and other FTP clients.
• HTTP file server – Simple web UI that lets you manage files from any modern browser on the same network (Chrome, Edge, Firefox, Safari, etc.).
• Configurable ports and credentials – Change FTP and HTTP ports, username and password, enable or disable anonymous access and read-only mode from the Settings screen.
• Foreground service – Reliable background operation using an Android foreground service with a persistent notification while the server is running.
• Connected clients and transfer stats – See currently connected clients and basic transfer statistics (upload and download totals for FTP and HTTP).
• Onboarding and in-app tutorial – Built-in guidance that shows users how to connect from Windows, macOS and other devices on the same Wi-Fi network.
• Local-only and privacy-friendly – All traffic stays inside the local network; there is no external backend, account system or cloud dependency.

Use Cases

• Quickly move photos, videos and documents between phone and laptop over Wi-Fi.
• Turn an old Android phone into a simple, always-on local file server.
• Provide local file access in small offices, labs or classrooms without setting up a full NAS.
• Bundle as a utility app in your own branded product for your clients.

Technical Stack

• Framework: Flutter 3.5.4+ (null-safe, sound Dart)
• State management and routing: GetX
• Local storage: GetStorage for persisting ports, credentials and flags
• Platforms: Android (min SDK 21, target modern Android versions)

Permissions

The app requests only the permissions needed to run an FTP/HTTP server and access device storage:

• Network: INTERNET, ACCESS_NETWORK_STATE, ACCESS_WIFI_STATE, CHANGE_WIFI_MULTICAST_STATE
• Storage (depending on Android version): READ_EXTERNAL_STORAGE, WRITE_EXTERNAL_STORAGE, READ_MEDIA_IMAGES, READ_MEDIA_VIDEO, READ_MEDIA_AUDIO, MANAGE_EXTERNAL_STORAGE
• Foreground service and notifications: FOREGROUND_SERVICE, FOREGROUND_SERVICE_DATA_SYNC, POST_NOTIFICATIONS