For a routine SHA-256 checksum, use sha256sum from GNU Coreutils where it is available. To check many files or audit a directory tree, consider hashdeep; for a wider selection of digest algorithms, consider RHash or OpenSSL’s dgst. Use b3sum when BLAKE3 is the required algorithm, and xxhsum only for fast, non-security checksums. These are free, open-source command-line options, but the evidence here supports six tool families—not a verified list of 22 distinct tools.
How to choose a file-hashing command-line tool
Start with the checksum format or workflow you need, not a speed ranking. A hash utility can calculate a digest for a file; some can also compare files against saved checksums, while recursive audit tools are designed to inventory many files.
- Match the algorithm. A checksum published by a software project must be checked with that same algorithm. GNU recommends considering SHA-2, SHA-3, or BLAKE2b when a more secure hash is needed. See the GNU Coreutils manual.
- Check the reference. Matching a file to a digest establishes that its bytes match that reference value. It does not establish that the reference itself is trustworthy; obtain it through a trusted channel.
- Check verification and output formats. If you need to verify a downloaded checksum manifest, make sure the command supports its format and checking workflow.
- Choose a multi-file workflow when needed. A single-file command is not automatically a convenient recursive inventory or audit tool.
- Do not use a non-cryptographic checksum for security. xxHash is designed for non-cryptographic checksums and is not suitable for security-related verification.
The available commands and package versions depend on your operating system and installation. Check the local manual or help output before relying on a particular option.
Tools for everyday checksums and verification
GNU Coreutils: a practical default for common checksum files
GNU Coreutils includes familiar commands such as sha256sum, md5sum, b2sum, and cksum; SHA-1 and SHA-2 sum commands are also documented. Sum commands can calculate digests and check saved checksum lists, making Coreutils a useful starting point when it is installed and its output format matches the file you need to verify. Consult the GNU Coreutils manual for command behavior and the Coreutils manual PDF.
What’s actually slowing this PC down?
Pick the symptom - the matching free tool is one click away.
#1 Best Overall
- Read Before You Buy — No Video Output: These adapters support charging and USB 2.0 data transfer, but cannot transmit video signals. Except for standard USB webcams (which use USB data only), they are not compatible with HDMI/DisplayPort cables, video-capable USB-C hubs, or docking stations with video output.
- Convert USB-A Ports to USB-C: Designed to connect USB-C earphones, cables, flash drives, card readers, and other USB-C accessories to standard USB-A ports. Plug-and-play with no drivers or software required.
- Aluminum Alloy Housing: Built with a sturdy aluminum alloy shell that aids in heat dissipation and protects against daily wear and scratches. Designed to maintain a stable and secure connection.
- Compact & Travel-Friendly: The ultra-compact design allows the adapter to stay plugged into your device without blocking adjacent ports or adding bulk, reducing wear and tear on your original USB ports.
- 12-Month Warranty: Backed by a 12-month manufacturer warranty for peace of mind. Designed to meet strict quality control standards for reliable everyday performance.
For a SHA-256 manifest in the format accepted by GNU’s command, the general workflow is to run sha256sum on the file to calculate its digest, or use its check mode with a saved checksum list. Read the command’s local manual for exact syntax and supported options on your system.
OpenSSL dgst: digest functions in an OpenSSL installation
OpenSSL’s dgst command computes message digests for supplied files and also supports signature operations. It is a sensible choice when OpenSSL is already part of your workflow or when you need a digest exposed by the installed build. Available algorithms can depend on the OpenSSL version and provider configuration, so consult the OpenSSL 3.4 dgst manual and your local configuration rather than assuming every build offers the same set.
Rank #2
- 5-in-1 USB-C Hub: Experience comprehensive connectivity featuring a Power Delivery input, two USB-A 2.0 ports, a USB-A 3.0 port, and an HDMI port. (Note: The USB-C power delivery input port is only for connecting an external wall charger to power your laptop and cannot power peripheral devices.)
- 90W Pass-Through Charging: Achieve optimal charging with 90W pass-through power to your laptop, supported by a total input of 100W, with the hub reserving 10W for operational efficiency. (Note: Wall charger not included.)
- Quick Data Transfers: Accelerate your productivity with rapid data transfers using a high-speed 5Gbps USB 3.0 port and two 480Mbps USB 2.0 ports.
- 4K HDMI Display: Enhance your visual experience with a hub capable of delivering 4K resolution at 30Hz in both mirror and extend modes. Please note that this hub is compatible with MacBook (macOS 12 and newer), Windows 10 and 11, ChromeOS, and laptops equipped with DP Alt Mode and Power Delivery. Note: This device is not compatible with Linux.
- What You Get: Anker USB-C Hub (5-in-1, 4K HDMI), welcome guide, 18-month warranty, and our friendly customer service.
Tools for particular algorithms and formats
b3sum: when you need BLAKE3
b3sum is a dedicated command-line utility for BLAKE3. Its project documentation describes checksum checking, raw output, configurable output length, and thread options. Choose it when BLAKE3 is specifically appropriate or required—not as a drop-in verifier for SHA-256 or another published digest. See the BLAKE3 project README for documented behavior.
RHash: a broad selection of digest algorithms
RHash supports a wide range of algorithms, including CRC variants, MD5, SHA families, Tiger, BitTorrent-related hashes, and others, according to the FreeBSD ports RHash manual. That breadth can help when you need to produce or check less common digest formats. Options and behavior can vary by packaged version; inspect rhash --help or the manual installed with your package before scripting against it.
Quick wins for a faster PC:
Fix the driver behind crashes, sound loss and screen glitchesFind Drivers →Clear out junk files and repair common Windows errorsFree Scan →Rank #3
- Sleek 7-in-1 USB-C Hub: Features an HDMI port, two USB-A 3.0 ports, and a USB-C data port, each providing 5Gbps transfer speeds. It also includes a USB-C PD input port for charging up to 100W and dual SD and TF card slots, all in a compact design.
- Flawless 4K@60Hz Video with HDMI: Delivers exceptional clarity and smoothness with its 4K@60Hz HDMI port, making it ideal for high-definition presentations and entertainment. (Note: Only the HDMI port supports video projection; the USB-C port is for data transfer only.)
- Double Up on Efficiency: The two USB-A 3.0 ports and a USB-C port support a fast 5Gbps data rate, significantly boosting your transfer speeds and improving productivity.
- Fast and Reliable 85W Charging: Offers high-capacity, speedy charging for laptops up to 85W, so you spend less time tethered to an outlet and more time being productive.
- What You Get: Anker USB-C Hub (7-in-1), welcome guide, 18-month warranty, and our friendly customer service.
Tools for directory inventories and fast comparisons
hashdeep: recursive hashing and audit workflows
hashdeep is designed for hashing multiple files recursively, computing multiple digests, matching known hashes, and auditing file collections. Its documented algorithms include MD5, SHA-1, SHA-256, Tiger, and Whirlpool. Those features make it more suitable than a one-file command when the task is to create or compare a directory-scale inventory. The available reference is the hashdeep manual; check your platform’s packages and the project’s current status before adopting it for ongoing use.
xxhsum: non-cryptographic checksums
xxhsum calculates and checks xxHash checksums and includes benchmark options. The project identifies the CLI as GPLv2; see the xxHash project. Debian’s xxhsum manual describes xxHash as non-cryptographic and warns against security-related use. It can fit speed-oriented comparisons where resistance to an adversary is not required, but do not use it to establish authenticity or security.
Rank #4
- Dual Converters, Infinite Potential：Includes 2× USB C male to USB A female adapters and 2× USB A male to USB C female adapters. Perfect for a wide range of uses—tablets with Bluetooth keyboards, expand USB ports on macbook, and more. Two different converters for all your daily needs
- Next-Level 10Gbps & 3A Charging: No more slow 480Mbps, this usb to usb c adapter has a transfer speed of up to 10Gbps, allowing you to do more transferring in less time. This usb adapter fits both USB A and USB C charger, supporting up to 3A fast charging
- Upgraded Exquisite Craftsmanship: With an aluminum alloy housing and metal connector, the usbc to usb adapter is extremely durable and sturdy. Rigorously tested to withstand more than 10,000 times of plugging and unplugging, ensuring long-lasting performance
- Broad Compatible: The usb c to usb adapter widely supports all USB C/ USB A devices like laptops, tablets, cellphones, car chargers, and phone chargers. Such as compatible with MacBook Pro/Air 2023/2022, Thunderbolt 4/3 Devices,Apple MagSafe Watch 9/8/7/SE/Ultra, iPad Pro 2022/2021, Samsung Galaxy S23/S20/S10, and iPhone 17/16/15 Pro. Plug and play
- Please Note: To reach 10Gbps speed, keep the cable under 3.3 ft. For USB A Male to USB C adapters, try flipping the USB C connector. USB C Male to USB A adapters support bidirectional 10Gbps transfer within 3.3 ft
Which tool fits your task?
| Task | Good starting point | Why |
|---|---|---|
| Check a common SHA-256 checksum file | GNU Coreutils sha256sum |
Calculates and checks digests; verify that the manifest format is compatible. |
| Use a digest exposed by an existing OpenSSL installation | OpenSSL dgst |
Computes file digests; available algorithms depend on version and provider configuration. |
| Calculate or check BLAKE3 | b3sum |
Dedicated BLAKE3 CLI with additional documented output and thread options. |
| Work with a broad range of algorithms | RHash | Supports numerous digest families; check local version-specific options. |
| Inventory and audit a directory tree | hashdeep |
Designed for recursive hashing and known-hash matching. |
| Compare data with a non-cryptographic checksum | xxhsum |
Provides xxHash checksums; not appropriate for security-related verification. |
This is a workflow-based shortlist, not a speed ranking. No comparable throughput results under shared hardware, file sizes, versions, and methods are established here, so benchmark claims would not be a sound basis for ranking these tools.
Why this is not a verified list of 22 tools
The available documentation establishes useful options across six tool families, but it does not verify 22 distinct utilities against a consistent inclusion standard. Some names refer to separate executables within a larger package, while others are dedicated algorithm-specific commands; counting commands, algorithms, or package variants as separate tools without checking them would make the title’s number misleading. The choices above are limited to tools with documented capabilities relevant to the stated workflows.
Crashes, No Sound, or Screen Glitches?
Random freezes, missing sound and display glitches usually trace back to one bad driver. Find and replace yours safely.Free scan · under a minuteWindows Errors? Fix Them Before They Spread
Repair common Windows errors and clear accumulated junk for a smoother, more stable PC - no reinstall needed.Free scan · no reinstallBest Value
- 5-in-1 Connectivity: Equipped with a 4K HDMI port, a 5 Gbps USB-C data port, two 5 Gbps USB-A ports, and a USB C 100W PD-IN port. Note: The USB C 100W PD-IN port supports only charging and does not support data transfer devices such as headphones or speakers.
- Powerful Pass-Through Charging: Supports up to 85W pass-through charging so you can power up your laptop while you use the hub. Note: Pass-through charging requires a charger (not included). Note: To achieve full power for iPad, we recommend using a 45W wall charger.
- Transfer Files in Seconds: Move files to and from your laptop at speeds of up to 5 Gbps via the USB-C and USB-A data ports. Note: The USB C 5Gbps Data port does not support video output.
- HD Display: Connect to the HDMI port to stream or mirror content to an external monitor in resolutions of up to 4K@30Hz. Note: The USB-C ports do not support video output.
- What You Get: Anker 332 USB-C Hub (5-in-1), welcome guide, our worry-free 18-month warranty, and friendly customer service.
Where Hashcat fits—and where it does not
Hashcat is free and open source under the MIT license, but it is a password-recovery platform with many hash modes, not a routine file-checksum generator. It belongs in a discussion of password-hash recovery rather than this shortlist of utilities for calculating or checking file digests. See the Hashcat README.
Quick Recap
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
