This utility provides a Web interface for remote operation c operating system and its service / daemon. It provides a file manager (copy, rename, move, delete, chmod, touch, creating files and folders) The boxed version is 22.8 Kb – the size of large files are now well defined. Support for * nix-like and Windows systems; support for nix, Windows systems with nix and nix. It also works with zip archives (packing, unpacking) + compression tar.gz.
Source: https://thehackernews.com/2011/06/wso-new-version-25-web-shell-2011.html