FTP4Shell 1.1.4.10 was available to download from the developer's website when we last checked. We cannot confirm if there is a free download of this software available. The following version: 1.1 is the most frequently downloaded one by the program users. The actual developer of the program is Sergei V. Lepitko. We recommend checking the downloaded files with any free antivirus. FTP4Shell lies within Internet & Network Tools, more precisely Network Tools.
From the developer:
FTP client integrated in your Windows Explorer. Using it you can maintain your web pages, download digital images, music, video or transfer files between your PC and FTP servers. Main features: explorer like easy to use user interface, typical file operations with remote files/folders as with local file objects, recursive deletion, selective upload/download, custom settings for each server as a part of your ftp account.
You may want to check out more software, such as PageScope Network Setup or Inspyder InSite Trial, which might be related to FTP4Shell.