| 6tunnel | Tunnels IPv6 connections for IPv4-only applications | |
| ajaxterm | A web based terminal | |
| aria2 | Download utility that supports HTTP(S), FTP, BitTorrent, and Metalink | |
| autossh | Automatically restart SSH sessions and tunnels | |
| axel | Download accelerator | |
| bird | RIP, OSPFv2 and BGP daemon (ipv4 version) | |
| bridge-utils | Utilities for configuring the Linux ethernet bridge | |
| bti | Console client for Twitter and identi.ca | |
| cadaver | Command-line WebDAV client for Unix | |
| capi4hylafax | capi plugin for hylafax to enable isdn faxing | |
| chrony | Dial-up friendly NTP daemon and excellent replacement for NTP on desktop systems | |
| clamz | Command-line program to download MP3 files from Amazon.com's music store. | |
| clusterssh | Cluster SSH opens terminal windows with connections to specified hosts and an administration console. | |
| corkscrew | A tool for tunneling SSH through HTTP proxies | |
| curl | An URL retrival utility and library | |
| dhcp | A DHCP server, client, and relay agent | |
| dhcpcd | RFC2131 compliant DHCP client daemon | |
| drivel | GTK client for working with online journals (blogs). | |
| ferm | Tool to maintain complex firewalls | |
| freenx | Free Software (GPL) Implementation of the NX Server | |
| freerdp | Free RDP client | |
| gwget | Download manager for GNOME | |
| gwibber | Microblogging client for GNOME, which supports Twitter, Identi.ca, StatusNet, Facebook, Flickr, Digg, FriendFeed and Qaiku | |
| hashcash | a denial-of-service counter measure tool for email/spam. | |
| httptunnel | Creates a bidirectional virtual data connection tunnelled in HTTP requests | |
| icecast | Streaming audio over the Internet | |
| ifenslave | Utility for bonding ethernet interfaces | |
| ipcalc | Calculates IP broadcast, network, Cisco wildcard mask, and host ranges | |
| iperf | A tool to measure maximum TCP bandwidth | |
| iputils | IP Configuration Utilities (and Ping) | |
| keychain | A front-end to ssh-agent, allowing one long-running ssh-agent process per system, rather than per login | |
| knemo | The KDE Network Monitor | |
| ksshaskpass | KDE4 implementation of ssh-askpass with Kwallet integration | |
| kvpnc | A KDE Desktop Environment frontend for various vpn clients | |
| lksctp-tools | An implementation of the SCTP protocol | |
| memcached | A distributed memory object caching system | |
| minidlna | A DLNA/UPnP-AV Media server (aka ReadyDLNA) | |
| miredo | Teredo client and server. | |
| mobile-broadband-provider-info | Network Management daemon | |
| modemmanager | Mobile broadband modem management service | |
| mosh | Mobile shell, surviving disconnects with local echo and line editing | |
| ndisc6 | A collection of IPv6 networking utilities - ndisc6, rdisc6, tcptraceroute6, tracert6, rltraceroute6, tcpspray6 | |
| neatx | A free NX server by google | |
| nemesis | command-line network packet crafting and injection utility | |
| neon | HTTP and WebDAV client library with a C interface | |
| netcf | A library for configuring network interfaces | |
| netstat-nat | Small program written in C displaying NAT connections, managed by netfilter. | |
| networkmanager | Network Management daemon | |
| networkmanager-openconnect | NetworkManager VPN integration for openconnect | |
| networkmanager-openvpn | NetworkManager VPN plugin for OpenVPN | |
| networkmanager-pptp | NetworkManager VPN plugin for pptp | |
| networkmanager-vpnc | NetworkManager VPN plugin for vpnc | |
| npapi-sdk | Netscape Plugin API (NPAPI) | |
| ntp | Network Time Protocol reference implementation | |
| nxclient | Nomachine's closed source client for NX servers | |
| oidentd | An ident (rfc1413 compliant) daemon that runs on Linux | |
| omniorb | A CORBA object request broker for C++ and Python. | |
| openconnect | Open client for Cisco AnyConnect VPN | |
| openntpd | Free, easy to use implementation of the Network Time Protocol. | |
| openssh | Free version of the SSH connectivity tools | |
| openvpn | An easy-to-use, robust, and highly configurable VPN (Virtual Private Network) | |
| packeth | A Linux GUI packet generator tool for ethernet. | |
| proxytunnel | a program that connects stdin and stdout to a server somewhere on the network, through a standard HTTPS proxy | |
| pssh | Parallel versions of the openssh tools ssh, scp, rsync, nuke, slurp | |
| putty | A terminal integrated SSH/Telnet client | |
| quagga | BGP/OSPF/ISIS/RIP/RIPNG routing daemon suite | |
| r8168 | A kernel module for Realtek 8168 network cards | |
| radvd | IPv6 Router Advertisement Daemon | |
| rdesktop | An open source client for Windows Remote Desktop Services | |
| remmina | Remmina is a remote desktop client written in GTK+. | |
| rsync | A file transfer program to keep remote files in sync | |
| rygel | UPnP AV MediaServer and MediaRenderer that allows you to easily share audio, video and pictures, and control of media player on your home network | |
| s3cmd | A command line client for Amazon S3 | |
| scponly | A limited shell for ssh/scp | |
| ser2net | A proxy that allows telnet/tcp connections to be made to serial ports | |
| smb4k | A KDE program that browses samba shares | |
| snarf | Command-line URL retrieval tool (http/ftp/gopher) | |
| socat | Multipurpose relay | |
| sshpass | Fool ssh into accepting an interactive password non-interactively | |
| sslh | SSL/SSH/OpenVPN/XMPP/tinc port multiplexer | |
| streamtuner | A stream directory browser | |
| stunnel | A program that allows you to encrypt arbitrary TCP connections inside SSL | |
| tightvnc | VNC Unix server && viewer | |
| tinc | VPN (Virtual Private Network) daemon | |
| tor | Anonymizing overlay network. | |
| ttytter | A multi-functional, command-line twitter client | |
| ucarp | UCARP is a portable implementation of the CARP protocol | |
| unison | Unison is a file-synchronization tool | |
| vidalia | Controller GUI for Tor | |
| vinagre | A VNC Client for the GNOME Desktop | |
| vino | a VNC server for the GNOME desktop | |
| vpnc | VPN client for cisco3000 VPN Concentrators | |
| wget | A network utility to retrieve files from the Web | |
| whois | The whois client by Marco d'Itri | |
| wicd | Wired and wireless network manager for Linux | |
| wol | Wake On LAN functionality in a small program. It wakes up hardware that is Magic Packet compliant | |
| wput | A command line tool to upload files to FTP site, the opposite to wget | |
| x11-ssh-askpass | Lightweight passphrase dialog for SSH | |
| youtube-dl | A small command-line program to download videos from YouTube.com and a few more sites |