Nmap

Easily audit your local network

DU Meter

Comfortably control the speed of your network

Psiphon

Tool to avoid Internet censorship and blockades

Open Ports Scanner

Stay informed about which ports are open

Proxy Switcher

Browse the web anonymously

MyConnection Server

Obtain data about your network by means of this complete analyzer

UltraSurf

Browse the Internet anonymously

WLAN Optimizer

Optimize your Wi-Fi connection

DameWare NT Utilities

Allows network administrators to improve how they control PCs

Fiddler

Control and debug your Internet traffic

Magic NetTrace

Discover the route followed by your Internet connections

NET Traffic Meter

A very good utility to monitor the traffic of your connection

I2P

Browse the Internet anonymously

proXPN

Protect your Internet connection

SoftPerfect Network Scanner

Carry out a deep analysis of your network with this fantastic application

Your Freedom

Avoid censorship and protect your identity online

Mail, Calendar, and People

Plan your day and keep in touch

Turbo Mailer

Send mass emails

Zimbra Desktop

Manage all your accounts from the same application

Mailspring

Mail client to boost user productivity

Microsoft Outlook

Microsoft's email client

Mail Bomber

One of the best massive email delivery programs

Free Email Extractor

Easily gather email addresses

Windows Live Mail

Microsoft's multi-account email client

Spark

Complete mail client compatible with different services

Thunderbird Portable

Use this email manager on any PC with a USB port

Inky

Receive all your emails in a single client

IncrediMail

Customize your email's appearance and give your friends a surprise

Yahoo Mail

Access to your Yahoo email account

Stellar Converter for OST

Convert your Outlook emails to PST format

Outlook Connector

Use your Hotmail accounts straight from Outlook