Filezilla
Features
Among others, the features of FileZilla include the following:

Easy to use
Supports FTP, FTP over SSL/TLS (FTPS) and SSH File Transfer Protocol (SFTP)
Cross-platform. Runs on Windows, Linux, *BSD, OSX and more
Available in many languages
Supports resume and transfer of large files >4GB
Powerful Site Manager and transfer queue
Drag & drop support
Configurable Speed limits

Filename filters
Network configuration wizard