awesome-networking

Inexhaustive list of network utilities. I hope you find it useful.

1. arpwatch – keep track of ethernet/ip address pairings.
2. bmon – bandwidth monitor and rate estimator.
3. bwm-ng – console-based live network and disk io bandwidth monitor.
4. curl – transfer data with URLs. (alternatives aria2, httpie)
5. darkstat – Captures network traffic, calculates statistics, and serves reports over HTTP.
6. dhclient – Dynamic Host Configuration Protocol Client.
7. dhcpcd - RFC2131 compliant DHCP client daemon.
8. dig – DNS lookup utility.
9. dstat – A versatile resource statistics tool.
10. ethtool – utility for controlling network drivers and hardware.
11. gated – gateway routing daemon.
12. host – DNS lookup utility.
13. hping – TCP/IP packet assembler/analyzer.
14. ibmonitor – shows bandwidth and total data transferred.
15. ifstat – report network interfaces bandwidth.
16. iftop – display bandwidth usage.
17. ip (PDF file) – ifconfig on steroids.
18. iperf3 – A TCP, UDP, and SCTP network bandwidth measurement tool.
19. iproute2 – collection of utilities for controlling TCP/IP.
20. iptables – utility for configuring Linux kernel firewall.
21. IPTraf – Console-based network monitoring utility.
22. iputils – Network monitoring tools, including ping.
23. iw – a new nl80211 based CLI configuration utility for wireless devices.
24. jwhois ( improved whois) – client for the whois service.
25. “lsof -i” – reveal information about your network sockets.
26. Lynis - Auditing, system hardening, compliance testing.
27. mtr – network diagnostic tool.
28. net-tools – the collection of base networking utilities for Linux.
29. ncat – much-improved re-implementation of the venerable Netcat.
30. nethogs – Linux 'net top' tool written in C++.
31. Netperf – Network bandwidth benchmark.
32. netsniff-ng – Swiss army knife for your daily Linux network plumbing if you will.
33. netstat – Print network connections, routing tables, interface statistics, masquerade connections, etc.
34. netwatch – monitor network connections.
35. ngrep – ngrep is like GNU grep applied to the network layer.
36. nload – Monitors network traffic and bandwidth usage.
37. nmap – Nmap ("Network Mapper") utility for network discovery and security auditing.
38. nmcli – command-line tool for controlling NetworkManager.
39. nmtui – provides a text interface to configure networking by controlling NetworkManager.
40. nslookup – for querying DNS to obtain domain name or IP address mapping. (alternatively dnslookup)
41. openssl - The Open Source toolkit for SSL and TLS protocols.
42. openvpn - robust and highly configurable VPN
43. paping - TCP ping on specific port.
44. ping – send icmp echo_request to network hosts.
45. iproute2 (route) – show / manipulate the IP routing table.
46. slurm – yet another network load monitor.
47. snort – A lightweight network intrusion detection system.
48. smokeping – A tool to keep track of your network latency.
49. socat – relay for bidirectional data transfer between two independent data channels
50. ss – another utility to investigate sockets.
51. ssh – the infamous Secure Shell protocol.
52. speedometer – Measure and display the rate of data across a network connection or data being stored in a file.
53. speedtest-cli – for testing internet bandwidth using speedtest.net.
54. systemd-networkd - a system daemon that manages network configurations.
55. tcpdump – dump traffic on a network.
56. tcptrack – displays information about TCP connections on a network interface.
57. telnet – User interface to TELNET.
58. tracepath – traces path to a network host discovering MTU along this path (similar traceroute)
59. traceroute – Tracks the route taken by packets over an IP network.
60. vnStat – A console-based network traffic monitor.
61. websocat – CLI client for web sockets, like netcat/curl/socat for ws://
62. wget – Network utility to retrieve files from the Web.
63. WireGuard - extremely simple yet fast and modern VPN.
64. wireless_tools – Tools allowing to manipulate the Wireless Extensions.
65. Wireshark – network protocol analyzer.

Sorted alphabeatically, might make categories if the list expands significantly. You're welcome to make a pull request with suggestions.