Network & Admin
Modern day networking is a very different beast in terms of complexity, though the general idea remains the same: Maintain a digital network of computers, both in server form and even in virtual machine form, and perform all administrative tasks needed in order to do so efficiently and effectively. To do this, software to monitor network traffic and uptime, analyze system logs, and web usage statistics is crucial. That’s where the software in this category comes in to play.
Most popular apps
VirtualBox
VirtualBox is a powerful x86 and AMD64/Intel64 virtualization product for enterprise as well as home use. Not only is VirtualBox an extremely feature rich, high performance product for enterprise customers, it is also the only professional solution that is freely available as...

Wireshark
Wireshark is the world's foremost network protocol analyzer. It lets you capture and interactively browse the traffic running on a computer network. It is the de facto (and often de jure) standard across many industries and educational institutions.

PuTTY
PuTTY is a free and open-source terminal emulator, serial console and network file transfer application. It supports several network protocols, including SCP, SSH, Telnet, rlogin, and raw socket connection. It can also connect to a serial port.

QEMU
QEMU (short for "Quick EMUlator") is a free and open-source hosted hypervisor that performs hardware virtualization.

simplewall
Simple tool to configure Windows Filtering Platform (WFP) which can configure network activity on your computer.
Pi-hole
Block ads for all your devices without the need to install client-side software. The Pi-hole blocks ads at the DNS-level, so all your devices are protected.

Nmap
Nmap ("Network Mapper") is a free and open source (license) utility for network exploration or security auditing. Many systems and network administrators also find it useful for tasks such as network inventory, managing service upgrade schedules, and monitoring host or...