Core FTP

Core FTP is a program for transfer files between two computer machines. Features like SFTP (SSH), SSL, TLS, IDN, browser integration, site to site transfers, FTP transfer resume, drag and drop support, file viewing & editing, firewall support, custom commands, FTP URL parsing, command line transfers, filters, and much, much more! This free, secure FTP client gives you a fast, easy, reliable way to update and maintain your website via FTP. It also provides a secure method (via SSL, TLS, or SFTP) to upload / download files to and from FTP servers. There are no popup ads, advertising or spyware and youre never asked or reminded to register.

Features:
Queueing of multiple FTP transfers on multiple sites
Sessions to save FTP transfers for later resuming
Recursive uploading, downloading, and deleting
Optional reconnecting of lost connections
Legacy SFTP client support and options
Low memory footprint (~4mb connected - most clients are 8-12mb)
All this and more for free - Try and find another commercially supported free ftp client with SSL & SFTP (there aren't any!).

In Pro version you have:
Fast multiple threaded connection options
Email notification of transfer status
Download acceleration (Multi-part downloads)
IBM Information Exchange (IE) support
GXS ICS support (in v2)
Splash screen delay removed
Thumbnail image viewing of directories.
Recursive chmod/timestamp setting, and other advanced options
Ability to customize screen setup
Transfer scheduling (schedule unattended transfers)
File Synchronization
Use of templates for common or repetitive tasks
Encryption - decryption of files for extra security
Zip compression - decompression of files
Additional utilities including Ping & TraceRoute
External program execution (for AV, etc)
Connect Manager for connecting to high traffic sites