Nload is a console application which monitors network traffic and bandwidth usage in real time. It visualizes the in- and outgoing traffic using two graphs, and provides additional info like total amount of transferred data and min/max network usage.

mbuffer is a tool for buffering data streams with a large set of features:

• direct support for TCP based network targets (IPv4 and IPv6)

• ability to send to multiple targets in parallel (distribution mode)

• support for multiple volumes

• I/O rate limitation

• high/low watermark based restart criteria

• configurable buffer size

• on the fly MD5 hash calculation

• highly efficient, multi-threaded implementation

iwd is a wireless daemon for Linux that aims to replace WPA Supplicant. It optimizes resource utilization by not depending on any external libraries and instead utilizing features provided by the Linux kernel to the maximum extent possible.

This package provides a control tool for the B.A.T.M.A.N. mesh networking routing protocol provided by the Linux kernel module batman-adv, for Layer 2.

yggtray is an Yggdrasil tray and control panel. It allows the user to configure, run and control the Yggdrasil daemon.

Nanomsg is a socket library that provides several common communication patterns. It aims to make the networking layer fast, scalable, and easy to use. Implemented in C, it works on a wide range of operating systems with no further dependencies.

Miredo is an implementation (client, relay, server) of the Teredo specification, which provides IPv6 Internet connectivity to IPv6 enabled hosts residing in IPv4-only networks, even when they are behind a NAT device.

Aircrack-ng is a complete suite of tools to assess WiFi network security. It focuses on different areas of WiFi security: monitoring, attacking, testing, and cracking. All tools are command-line driven, which allows for heavy scripting.

libndp contains a library which provides a wrapper for IPv6 Neighbor Discovery Protocol. It also provides a tool named ndptool for sending and receiving NDP messages.

Iodine tunnels IPv4 data through a DNS server. This can be useful in different situations where internet access is firewalled, but DNS queries are allowed. The bandwidth is asymmetrical, with limited upstream and up to 1 Mbit/s downstream.

This package provides a C implementation of a lightweight application-protocol for devices that are constrained their resources such as computing power, RF range, memory, bandwidth, or network packet sizes. This protocol, CoAP, is standardized by the IETF as RFC 7252.

ENet's purpose is to provide a relatively thin, simple and robust network communication layer on top of UDP. The primary feature it provides is optional reliable, in-order delivery of packets. ENet omits certain higher level networking features such as authentication, server discovery, encryption, or other similar tasks that are particularly application specific so that the library remains flexible, portable, and easily embeddable.

Socket6 binds the IPv6 related part of the C socket header definitions and structure manipulators for Perl.

The THC IPv6 Toolkit provides command-line tools and a library for researching IPv6 implementations and deployments. It requires Linux 2.6 or newer and only works on Ethernet network interfaces.

Zyre provides reliable group messaging over local area networks using zeromq. It has these key characteristics:

• Zyre needs no administration or configuration.

• Peers may join and leave the network at any time.

• Peers talk to each other without any central brokers or servers.

• Peers can talk directly to each other.

• Peers can join groups, and then talk to groups.

• Zyre is reliable, and loses no messages even when the network is heavily loaded.

• Zyre is fast and has low latency, requiring no consensus protocols.

• Zyre is designed for WiFi networks, yet also works well on Ethernet networks.

RESTinio is a header-only C++14 library that gives you an embedded HTTP/Websocket server. It is based on standalone version of ASIO and targeted primarily for asynchronous processing of HTTP-requests.

iPerf is a tool to measure achievable bandwidth on IP networks. It supports tuning of various parameters related to timing, buffers and protocols (TCP, UDP, SCTP with IPv4 and IPv6). For each test it reports the bandwidth, loss, and other parameters.

Net::DNS::Resolver::Programmable is a programmable DNS resolver for offline emulation of DNS.

GNU MAC Changer is a utility for viewing and changing MAC addresses of networking devices. New addresses may be set explicitly or randomly. They can include MAC addresses of the same or other hardware vendors or, more generally, MAC addresses of the same category of hardware.

The lksctp-tools project provides a user-space library for SCTP (libsctp) and C language header files (netinet/sctp.h) for accessing SCTP-specific APIs not provided by the standard sockets. It also includes some SCTP-related helper utilities.

parprouted is a daemon for transparent IP (Layer 3) proxy ARP bridging. Unlike standard bridging, proxy ARP bridging can bridge Ethernet networks behind wireless nodes. Normal layer 2 bridging does not work between wireless nodes because wireless does not know about MAC addresses used in the wired Ethernet networks. This daemon can also be useful for making transparent firewalls.

lcagent can send and receive data over multicast and to pipe data between programs on one computer and as many receivers as the multicast network can support simultaneously.

Arp-scan is a tool that uses ARP to discover and fingerprint IP hosts on the local network.

Asio is a cross-platform C++ library for network and low-level I/O programming that provides developers with a consistent asynchronous model using a modern C++ approach.