WebSharing Android app
The name on the market is WebSharing / WebSharing Lite
The easiest way to transfer files to your Android device “over the air” via WiFi.
It works like this: the program launches a simple web server on a smartphone and gives an IP address. Just drive it into the address bar of your browser on the desktop machine and you're done. The contents of the SD card become available to you. You can upload files back and forth. Root is not required.
The file system is available “as is”
AND in the “media” view (only in the paid PRO version). That is, you can view pictures, listen to music and watch videos directly from your phone.
In the settings, you can restrict access rights and change some other parameters - port number, screen mode, etc. WebSharing WebSharing Lite