Smoothwall Firewall - Open Source Firewalls

Smoothwall is a Linux distribution designed to be used as an open source firewall. Designed for ease of use, Smoothwall is configured via a web-based GUI, and requires little or no knowledge of Linux to install or use. Smoothwall is also a private software company based in the UK that develops firewall and web content filtering software, and which also maintains the  SmoothWall open source project.

Untangle - Open Source Firewalls

The Untangle "Firewall" is a simple traditional firewall used to block or log traffic.Untangle’s flexible deployment options and simple interface make getting started with a complete solution easier than you’d think – and at a fraction of the cost you’d expect.

FileZilla - Open Source FTP Client

FileZilla Support Services

FileZilla is cross-platform FTP software, consisting of FileZilla Client and FileZilla Server. Binaries are available for Windows, Linux, and Mac OS X. It supports FTP, SFTP, and FTPS (FTP over SSL/TLS). As of 18 April 2011, FileZilla Client was the 7th most popular download of all time from SourceForge.net. Support for SFTP (SSH File Transfer Protocol) is not implemented in Filezilla Server.

WinSCP - Open Source FTP Client

WinSCP (Windows Secure CoPy) is open source SFTP, SCP, and FTP client for Microsoft Windows. Its main function is secure file transfer between a local and a remote computer. Beyond this, WinSCP offers basic file manager and file synchronization functionality. For secure transfers, it uses Secure Shell (SSH) and supports the SCP protocol in addition to SFTP. It received 5 out of 5 stars for CNET editors' rating, and is ranked #2 in popularity for FTP software.