System processes
Security > Internet: Antivirus + Adware
AVG Antivirus (free Antivirus) AND
Spyboot Search & Destroy (free Adware) AND
Windows: Start > Control Panel > Windows Security Center: Firewall + Automatic Updates + Virus Protection : On
Optimise > System: Clean + Repair
Defrag > Faster: Disks + Programs
Smart Defrag (Free Defragmenter) OR
Auslogics Disk Defrag (free Defragmenter) OR
Windows: Start > All Programs > Accesories > System Tools > Disk Defragmenter (poor Defragmenter)
Msconfig > Faster: Startup + Memory
How to use MSCONFIG (article: Microsoft System Configuration Utility) AND
Windows: Start > Run > MSCONFIG > OK > Starup (tab) > Untick… > OK > Restart
Software applications
Files
Filezilla (Free FTP solution and open source, both a client and a server are available)
Winmerge (Compare both folders and files)
Coding
Sublime (A sophisticated text editor for code, markup and prose) OR
Atom (A hackable text editor for the 21st Century)
Images
Pain.NET (Free Software for Digital Photo Editing)
GIMP (GNU Image Manipulation Program)
Editing
OpenOffice (The Free and Open Productivity Suite)
Lightshot (The fastest way to take a customizable screenshot)
Vide Players
BS.Player (Free Video Player) OR
VLC Media Player (Free and open source cross-platform multimedia player and framework that plays most multimedia files as well as DVDs, Audio CDs, VCDs, and various streaming protocols.)
Video Editors
HandBrake (Tool for converting video from nearly any format to a selection of modern, widely supported codecs.)
VirtualDub (Compress Video)
Remote Access
TeamViewer (Secure remote desktop access) OR
CrossLoop (Free Access your computers from anywhere)
Others
Speccy (Fast, lightweight, advanced system information tool for your PC)
FileHippo (Utilities page)