PeaZip is an open source file and archive manager. It's freeware and free of charge for any use.

PeaZip can extract most of archive formats both from Windows and Unix worlds, ranging from mainstream 7Z, RAR, TAR and ZIP to experimental ones like PAQ/LPAQ family, currently the most powerful compressor available.

For archive creation, PeaZip suppors a wide range of compression and encryption standard, from fastes to most powerful ones, and allows to export job definition as scripts to bridge the gap between GUI and console applications, and let the user pick the best of the two worlds.

PeaZip has secure deletion feature, can verify file checksum and hash, and supports multiple strong encryption standards, optionally using two factor authentication (password and keyfile) for increased security:
7Z's AES256 encryption
ZIP WinZip's AE encryption based on AES256 (and ZipCrypto for legacy compatibility); can decrypt PKZip's AES encryption
FreeARC's ARC: AES256, Blowfish, Twofish256 and Serpent256 - this format is also capable to generate recovery records to protect data against corruption
PEA: AES256 EAX authenticated encryption.

Paint.NET is image and photo manipulation software designed to be used on computers that run XP, Server 2003 or Vista.

Every feature and user interface element was designed to be immediately intuitive and quickly learnable without assistance. In order to handle multiple images easily, Paint.NET uses a tabbed document interface. The tabs display a live thumbnail of the image instead of a text description. This makes navigation very simple and fast.

O&O DiskImage Express is free software which enables you to image your entire computer and restore single drives.
Mounts image as a drive – if, for example, you’ve accidentally deleted just one important file, you can now select to restore this file only from the entire imageNew
Images all drives, including drive information and system partition – all your installed programs and their personal settings can be imaged and quickly restored when needed
Restores individual data drives
Saves space with incremental and differential images that save only changes – images only those files that have been changed or added after the last imaging. This saves time!
Displays imaging information - O&O DiskImage 4 Express Edition keeps you constantly informed
Easy to use and free – free data imaging developed by data professionals.

The one-step solution for remote access. TeamViewer is the fast, simple and friendly solution for remote access over the Internet - all applications in one single, very affordable module. Remote control of computers over the Internet. Instantly take control over a computer anywhere on the Internet, even through firewalls. No installation required, just use it fast and secure. Training, sales and teamwork. TeamViewer can also be used to present your desktop to a partner on the Internet. Show and share your software, PowerPoint presentations etc. File transfer, chat and more. Share your files, chat, switch the direction during a teamwork session, and a lot more is included in TeamViewer.

Tool to download videos from YouTube and save it to your local computer. The videos can be converted to avi video format or to mp4 (compatible with iPod, iPhone). The main distinguishing feature of Youtube Downloader HD is that now you can download High Quality videos and High Definition videos from YouTube.