Wise Care 365 (Free Version) is an all-in-one system utility that checks your computer for common junk files, invalid registry entries and potential performance tweaks. After the initial scan, your computer is assigned a "Health Index' score and you can review the items that are suggested to be fixed and apply the fixes.

If there are issues that you would rather leave untouched, you can customize the scan settings and exclude them.

Instead of running the "fix it all" scan, you can also use the provided tools and manually scan your computer for selected issues. Other features include registry defrag, secure file deletion, a startup manager, system optimization tweaks, disk defrag, automatic registry backup and an option to schedule automatic scanning and cleaning.

VMware Player enables you to install and test operating systems on a virtual machine that can be run from inside Windows. You can install an operating system from a CD/DVD or from an ISO image file and a step-by-step wizard will guide you through the process or creating a virtual machine.

VMware Player is ideal for testing different operating systems (e.g. Linux or Windows) or virtual appliances. Each machine can be configured with virtual hard drives, network adapters, USB controllers and other hardware features.

Clonezilla is a free software disaster recovery, disk cloning and deployment solution.

You're probably familiar with the popular proprietary commercial package Norton Ghost®. The problem with these kind of software packages is that it takes a lot of time to massively clone systems to many computers. You've probably also heard of Symantec's solution to this problem, Symantec Ghost Corporate Edition® with multicasting. Well, now there is an OpenSource clone system (OCS) solution called Clonezilla with unicasting and multicasting!

Clonezilla, based on DRBL, Partclone and udpcast, allows you to do bare metal backup and recovery. There are two types of Clonezilla available: Clonezilla live and Clonezilla SE (server edition).

Clonezilla live is suitable for single machine backup and restore.

Clonezilla SE is for massive deployment, it can clone many (40 plus!) computers simultaneously.

Clonezilla saves and restores only used blocks in the harddisk. This increases the clone efficiency.

FreeFileSync is a folder comparison and synchronization software that creates and manages backup copies of all your important files. Instead of copying every file every time, FreeFileSync determines the differences between a source and a target folder and transfers only the minimum amount of data needed. FreeFileSync is free on Windows, Linux and macOS and has an Open Source version for Linux.

Donation version available with these extra features:
- Parallel file copy
- Auto-updater (Windows)
- Portable version (ZIP)
- Silent installation

Clam AntiVirus is an open source (GPL) anti-virus toolkit for UNIX, designed especially for e-mail scanning on mail gateways. It provides a number of utilities including a flexible and scalable multi-threaded daemon, a command line scanner and advanced tool for automatic database updates. The core of the package is an anti-virus engine available in a form of shared library.

ClamAVis also available for Windows as the result of a partnership between Immunet Corporation and Sourcefire, Inc. It is designed to provide the ClamAV community with a free Windows-specific Anti-Virus (AV) solution using an advanced Cloud-based protection mechanism.

Smallest of all AV-applications: only 3.45MB download-file (32bit).

You can use ClamAV For Windows as a stand-alone, host-based AV solution, or in conjunction with your pre-installed AV solution to provide enhanced detection for the latest malware threats.