DavDrive is a WebDAV server which allows the sharing of files between the mobile phone and PC via Wi-Fi.
Can be used as MTP alternative and offers the possibility to assign drive letters on Windows (Vista/7).

Supported operating systems are Mac OS X, Ubuntu and Windows.

More information about the setup:
http://davdrive-android.fun2code.de/

Full version:
- HTTPS
- Digest Authentication
- Filesystem select
- Start on boot
- Windows Vista, Windows 7, Windows 8, Windows 8.1 and Windows 10 support
- Widget
- Tasker and Locale Plug-in
- Android 5.x: Storage Access Framework support to write to external SD card
- Root support