The term “SolidFTP Server” usually points to one of two things: a very old legacy utility from the early 2000s, or more commonly, a mix-up with popular modern software that contains “Solid” and “FTP” in their names.
The two most common tools referred to under this name are detailed below: 1. The Built-in FTP Server in Solid Explorer (Android)
If you are trying to move files to or from a phone, you are likely looking for Solid Explorer, a highly popular file management application for Android.
The Feature: It includes a built-in FTP Server feature. This lets you turn your Android device into a local server over Wi-Fi.
How It Works: You turn on the FTP server from the app’s menu. It provides an IP address and port number (e.g., ftp://192.168.1.5:1234). You can type this address into a PC web browser, Windows File Explorer, or a desktop client like FileZilla to copy, move, or download your phone’s photos and files without needing a USB cable.
Limitation: It does not support encryption. Because of this, it is strictly intended for local area network (LAN) connections on a trusted home or office Wi-Fi network.
2. FTP Integration in SolidCP (Windows Server Control Panel)
If you are managing Windows web hosting, the term relates to SolidCP, a popular free and open-source multi-server enterprise control panel.