Network Management Software
PuTTY
PuTTY is a free and open-source lightweight and simple terminal application for Windows. PuTTY supports SSH client, telnet, SFTP, and rlogn and is useful for administrations that need to establish an SSH connection to remote systems such as network switches, routers, unix systems and vmware. PuTTY is provided as a 32 bit and 64 bit client with supports SSH2 and SSH1 protocols.
Packet Sender
Packet Sender is a free and open source utility to allow sending and receiving network packets, with support for TCP, UDP, and SSL. The tool is designed to be while still providing enough features for power users to do what they need, allowing anyone to manage packets according to their needs. Packet Sender is most commonly used for testing network APIs, malware analysis, testing network connectivity/firewalls and security research.
SolveDNS
With SolveDNS you can check your name servers, A records, mail servers, SOA records for errors, consistency, accuracy and preform speed using several DNS tests. SolveDNS does not cache any test results, so you get a fresh report everytime you run the test for your domain names.
pwncat
pwncat is a sophisticated bind and reverse shell handler with many features as well as a drop-in replacement or compatible complement to netcat, ncat or socat. pwncat is like netcat on steroids with Firewall, IDS/IPS evasion, bind and reverse shell, self-injecting shell and forwarding magic - and its fully scriptable with Python (PSE)
Netcat
With Netcat you can read and write data across network connections with the TCP/IP protocol. Netcat is a feature rich networking utility for macOS, Linux and Windows that is designed to a reliable tool that can be utilized by external programs and scripts. Netcat provides intricate tools for netowork debugging, network exploration and connection creation.
Wireshark
Wireshark is the world's most widely-used network protocol analyzer software. With Wireshark you can get a better understanding on what's happening on your network. The software let's you do deep analysis across hundreds of protocols at a microscopic level. Wireshark is free and open-source and has been in active development by contributions from volunteers across the globe since 1998. Today the software is used by commercial and non-profit enterprises, government agencies, and educational institutions.
Google Public DNS
The Domain Name System (DNS) protocol is an important part of the web's infrastructure it resolves the names of internet sites with their underlying IP addresses. Google Public DNS is a free, global DNS resolution service that anypne can use as an alternative to their current DNS provider.
LiteSpeed Web Server
LiteSpeed Web Server is an Apache alternative that conserves resources without sacrificing performance, security, or convenience. With LiteSpeed Web Server, you can double your capacity and eliminate third-party caching layers. It securely handle thousands of concurrent clients while consuming minimal memory and CPU. The LiteSpeed Web Server is a popular choice for people hosting WordPress sites as it allows them to server level cache pages and reach high requests per second.
Spyse
Spyse is a complete internet assets registry for cybersecurity professionals. With Spyse, you can track domains and their technology use to discover security vulnerabilities and technology choices. Spyse tracks over 25 billion records about the Internet-connected assets that can be browsed and downloaded.
Chrome Remote Desktop
With Chrome Remote Desktop you can remotely connect with and share your screen with others. Allowing you to Securely access your computer whenever you're away, using your phone, tablet, smart TV or another computer.