There are a lot of free software out there for the Windows PC. This page list them all here:

• AudioBookMaker - a tool for converting text to speech, then to MP3.
• VLC Media Player - media (audio or video) player; can even play streams
• Audacity - audio editor; can handle multiple tracks
• WinDirStat - visualize drive file space usage
• Paint.net - What Windows Paint should have been
• Video converter
• Windows media encoder
• Inkscape - drawing tool that supports SVG format
• Gimp - Photoshop-like tool, but free!
• Bimp - batch image processor for Gimp
• Krita - digital painting, check How to animate with Krita
• BFXR - free sound effects generator

• 7zip - file compression/decompression and encryption/decryption
• Recuva - file recovery utility
• Eraser - completely erase sensitive data from your hard drive
• YUMI - Multiboot USB creator; build special operating system boot drives that can help recover your local administrative rights should you forget your password, and many other useful things

Below are some code or text editing tools

• Notepadd++ - better than the original Windows notepad

• Dokuwiki - Text based wiki platform
• Wordpress - well established web platform; used to just for blogging; now you can used it for almost any purpose
• Joomla - well established web content management system (CMS)

• OpenOffice - MS Office, but free.

• Avast! Home Edition - Anti-virus software
• TrueCrypt - File and volume encryption tool
• K9 Web Protection - Home web filter

• Brave browser

• Google docs - online word processor
• Sumo paint - online paint program
• eyeOS - web-based OS
• classic video games - remember space invaders, asteroids, pac-man, and so on? Well, you can play flash versions of them here

• Animoto - instant video creation tool
• Zamzar - convert files from one format to another online