What is VNC ?
VNC (an abbreviation for Virtual Network Computing) is a great client/server software package allowing remote network access to graphical desktops. With VNC, you can access your machine from everywhere provided that your machine is connected to the Internet. VNC is free
TightVNC – Remote Tool
tightvnc remote desktop
TightVNC can …

Just very small tool to view your IP Address
IPConfig – Utility Program to Display  IP Address
The purpose of IPConfig is to provide a simple yet effective way of seeing one´s IP addresses, internal and external. This tool is designed and programmed in Visual Basic.NET and is displayed in a nice …

TeamViwer – Free Remote Support Program
TeamViewer – the All-In-One Solution for Remote Access and Support over the Internet.  TeamViewer establishes connections to any PC or server all around the world within just a few seconds. You can remote control your partner’s PC as if you were sitting right in front …

Pidgin – Open Source IM

Pidgin is an easy to use and free chat client used by millions. Connect to AIM, MSN, Yahoo, and more chat networks all at once. Support Windows and Linux/Unix OS
Pigin Support more than one IM 

AIM, Bonjour, Gadu-Gadu
Google Talk, Groupwise, ICQ
IRC, MSN, MySpaceIM
QQ, SILC, SIMPLE
Sametime, XMPP, Yahoo! …

Another Freeware Firewall
PrivateFirewall

is a proactive, multi-layered defense solution for Windows desktops and servers.
PrivateFirewall detects, blocks and quarantines activity characteristic of known malware, hacking, phishing and other threat types so that personal computer users and IT managers within small, medium or large organizations can more effectively and proactively protect the environments …

Do you need free tools for monitor your network?  Recommended try this freeware “Network”, also support Portable too.
Networx – Free Bandwidth Monitoring and Usage Reporting Tool

NetWorx is a simple and free, yet powerful tool that helps you objectively evaluate your bandwidth situation. You can use it to collect bandwidth usage data and measure …

FileZilla Client is a fast and reliable cross-platform FTP, FTPS and SFTP client with lots of useful features and an intuitive graphical user interface. It has been designed for ease of use and with support for as many features as possible, while still being fast and reliable.
File Zilla – Free …

DownTester – Internet Speed Test

DownTester allows you to easily test your Internet download speed in multiple locations around the world. It automatically test the download speed of the URLs that you choose, one after another. It moves to the next download URL after the specified number of seconds has been …