FileZilla is a free and open-source FTP client that supports FTP, FTPS and SFTP protocols. Learn how to use FileZilla to connect to FTP servers, transfer files, edit remote files and more. FileZilla - The free FTP solution for both client and server. Filezilla is open source software distributed free of charge. FileZilla is a small but powerful FTP client with many features, such as site manager, SSL, SFTP, resume, drag&drop and more. Download the latest version of FileZilla for Windows, macOS, Linux or server from TechSpot. FileZilla is an open source software that supports FTP, FTPS and SFTP protocols. It offers FileZilla Pro with additional protocol support for cloud storage services, and FileZilla Server for making files available for others.