MemInfo

Always know how much RAM memory your PC is using

Eraser

Definitely erases a file from your computer

BleachBit

Free space on your hard drive in the easiest way

Argente Utilities

Complete utiltiy pack for your PC

Argente Disk Cleaner

Remove unnecessary files from your PC

PC Speed Maximizer

Give your computer more power, fixing the problems it may have

DTweak

Complete tool to optimize your computer

jv16 PowerTools

Optimize the performance and stability of Windows

ASTRA32

Obtain information about your system with maximum accuracy

O&O SafeErase

Manage to permanently remove any file from your computer

TweakNow WinSecret

Powerful tool to optimize Windows

Start-Q

Control all the processes that start with Windows

Fix it Center

Detect and fix any Windows error

FCleaner

One of the best free PC maintenance programs available

EnhanceMySe7en

Make the most of Windows 7

HDShredder

The best way to erase any file from your hard drive

Open Ports Scanner

Stay informed about which ports are open

WinBox

Management software for MikroTik routers

WinPcap

Library pack for network managers

DameWare NT Utilities

Allows network administrators to improve how they control PCs

Wireshark

Professional network analyzer

Cisco Packet Tracer

Find out how a network behaves

Fing

Scan and analyze your computer network

RouterPassView

Discover the router passwords that you have forgotten

Technitium MAC Address Changer

Change your network card's MAC

Hamachi

Tool to create virtual private networks

inSSIDer

Scan nearby Wi-Fi connections

NetSpeedMonitor

Measure your Internet speed

Nmap

Easily audit your local network

GFI LANguard

Check the vulnerabilities of your LAN network

Network Inventory Advisor

Control the software and hardware that connects to your networks