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HWMonitor is a hardware monitoring program that reads PC systems main health sensors including:

• CPU temperature, voltage, power consumption and utilization
• Mainboard voltages, temperatures, fans speed
• GPU voltage, temperature, utilization
• HDD temperature

AllDup removes duplicate files from one or multiple directories and includes a preview function using Windows own tools (IE, MediaPlayer and WordPad). Can find duplicates by file name, file extension, file content, file dates, file attributes. The program can also help identify and remove music and or image files that are not only slightly different.

Multiple files, directories, and drives can all be scanned, as well as ZIP or RAR archives (with an optional file size limit), along with filters for file types and/or folders.

CrystalDiskMark is benchmarks disk performance, measuring sequential and random 4KB/512KB reads/writes for any storage device. The target device does not need to be formatted.

A 64-bit version is available (within the folder).

Alternatively, CrystalDiskMark Portable is also available, which auto-switches between x86 and x64.

ChromeCookiesView is an alternative to the standard internal cookies viewer of Chromium-based Web browsers. It displays the list of all stored cookies and allows you to easily delete unwanted ones. It also allows you export the cookies into text/csv/html/xml file.

Skype allows users to make voice and video calls over the Internet. Although calls to other Skype users are free, other types of connections (landlines, SMS text) are not. Additional features include instant messaging, file transfer and conferencing.

sPortable is a version from PortableApps.com.

Note: The program became adware after its inclusion in the database (after its purchase by Microsoft).

WinContig is an easy-to-use file defragmentation program that allows defrag of parts of the drive. This is useful for squeezing extra performance out of important or frequently used files or programs without wasting time and energy cleaning up the rest of the drive.

Note that this is recommended only on magnetic disks. Flash-based drives (SSDs and thumb drives) don't benefit from defragmentation and such maintenance tools can reduce the life of the drive.

The program engine is based on the standard Microsoft defragmentation API and allows you to group files into profiles, accepting a number of available command-line switches for additional control.

RapidCRC Unicode is a hashing program capable of checking and verifying the integrity of files, folders, or whole drives. The program includes process priority, ability to pause/resume analysis, job queuing, easily copy hashes to the clipboard and multi-threaded checks. If using checksum files (e.g. .sfv or .md5) for future verification, options include the ability to generate for every analyzed file, directory, or a single checksum with all hash data.

Includes direct support for CRC hashing in the filename (common for anime releases) for example: "MyFile [45DEF3A0].avi") Other algorithms range from fast to secure, including SFV(CRC32), MD5, ED2K, SHA-1/256/512 and Blake2sp.

Based on the original RapidCRC but updated with extended Unicode support.

RIOT (Radical Image Optimization Tool) presents a before-and-after image compression view that allows you to reduce file size of an image into JPG, PNG, or GIF format. Includes optional metadata removal, batch operations, compression to a target file size, transparency options, and other common editing functions (flip, rotate, zoom, pan). Notable versus similar software in the ability to gradually reduce the available colors one-by-one (7, 8, 9, 10...), not just milestones of 16, 32, 64 etc.

The program is also available as a plugin for XnView, GIMP, or Irfanview (see website).

Functional in Linux using Wine. Many of the official entries here on PortableFreeware have used RIOT for compression. Note that the installer version of this program is considered adware.

ChromeCacheView reads the cache folder of Chromium-based Web browsers, displaying a list of files currently stored. For each file, URL, Content type, File size, Last accessed time, Expiration time, Server name, Server response and more are shown.