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 …

Steganos LockNote 

Steganos LockNote will change the way you work with confidential notes. Application and document in one: the mechanism to encrypt and decrypt a note is part of it. Secure, simple, independent. No installation required.

System requirements: Windows 2000, Windows XP or better

Why use Steganos LockNote?

Store your most valuable notes as …

Drive Manager – Freeware retrive drive information
 
Drive Manager makes it easy to retrieve drive information for all your drives at a glance. It runs as a standalone EXE file and displays Label, Type, Size, Used, Available, Format, Serial number and Percentage free for each local and removable drive. The information …

Defraggler – Freeware Portable Defrag
From everyone here at Piriform, the company that brought you CCleaner and Recuva… we now bring you a file defragmentation tool… Defraggler!
It differs from other defrag tools on the market, by enabling you to quickly and simply defrag the files you want to, without having to …

SpeQ is a small, extensive mathematics program with a simple, intuitive interface. All calculations are entered in a sheet. In there you can freely add, edit and execute calculations. SpeQ supports all common functions, constants, and units. Furthermore, you can define custom variables and functions, and plot graphs of your …

nPassword - Password Manager 

nPassword is designed to be the ultimate portable password manager (according to my view on the topic of course)
It is light, standalone, portable and more secure than most of it’s competitors. The keyword is convenience and that’s the area where nPasswords goes ahead. You can use customizable systemwide …

This easy to use tool allows user to connect to any database and browse or modify data, run sql scripts, export and print data. And the most important thing it is Freeware.
Database Browser 

There are two versions available.

Standard  and Portable
Standard version can be installed on Windows PC.

Portable software is a class …

PC audit – Audit PC Tool

WinAudit is easy to use, no special knowledge is required to use the programme. It is a self-contained single file that needs no installation or configuration. It can be run from a floppy disk or USB stick. Simply download the programme and double click on it. …