Free useful software to improve your PC usage

[York]

Hey friends,
I would like to share some free useful tools I've ever used, and if you have any other instructions, please advise. Thank u.
1. Disk Management:
easeus partition master home version for 32&64 bit Windows OS
http://www.partition-tool.com
2. Video Editor
Picasa
Camtasia Studio: http://www.techsmith.com/camtasia/
3. Web browser
Google Chrome, Firefox
try to download it from wwww.download.com
4. System Cleaner
Glary Utility  http://www.glaryutilities.com/
5. Backup software
If you need to backup your system, or partition, or whole disk, try Todo Backup  http://www.todo-backup.com
If you need to backup all, try disk director, special for large enterprises  http://www.acronis.com