No-IP

Assign a name to your IP address

Hamachi

Tool to create virtual private networks

Find MAC Address

A simple way to find out MAC addresses

IPConfig

A graphical interface for the command of the same name

Real Hide IP

Hide you IP address from prying eyes

NMapWin

Assess your network security by scanning ports

Easy Hide IP

Hide your IP address and your geographic location

Hide IP

Maintaining your privacy is very simple with this program

NetGhost

Define your IP for each WLAN that you connect to

Cisco Packet Tracer

Find out how a network behaves

NetworkMiner

Analyze passively the packets of your local network

Advanced IP Scanner

Analyze the computers connected to your local network

WinPcap

Library pack for network managers

Packetyzer

Packet capturer based on the Ethereal project

DynSite

Automatically updates your dynamic IP, very useful for dynamic Internet connections

Angry IP Scanner

Scan both IPs and port ranges

Signal

Instant messaging and chat app that guarantees anonymity

Telegram Messenger

Telegram's desktop client for Windows

Messenger for Desktop

Facebook Messenger on your Windows desktop

WhatsApp Viewer

Tool to view WhatsApp chats on PC

Telefuel

Alternative Telegram client focused on productivity for PCs

imo

Talk to your friends from your PC

WhatSender

Send multiple WhatsApp messages from your PC

WeChat

The Windows version of the popular Chinese messaging app

LINE

Instant messaging from your PC

Facebook Messenger

Chat with your contacts from your desktop

Windows Live Messenger

The departed Messenger by Microsoft

WhatsApp Messenger

The official version of WhatsApp for Windows

IMVU

Instant messaging and chats in 3D environments

WA Web Plus

An extension to use WhatsApp Web with more functions

QQ International

The messaging application to communicate at global level