CCSIO Benchmark is a Windows tool that measures the maximum sequential read/write speed achievable for a volume and the file stack beneath it. It cycles through combinations of IO buffer count, buffer size and caching mode to find the combination delivering the highest throughput. It can assess local drives, remote network shares and virtual devices such as RAM disks and encrypted file containers.
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A web tool that locates the center of the screen both in the middle and along the edges. It displays an actual 1:1 size ruler. The site states it is useful for aligning webcams and other equipment, or calibrating an aim dot for pro gaming. A window support option is shown.
Cerebro is a free, open-source, Electron-based launcher intended as an alternative to Alfred and Spotlight. It is described as a productivity software that supports multiple operating systems, and includes a plugin manager and an API for building and sharing plugins. It lists downloads for Windows, Mac and Linux at version 0.11.0.
CheatKeys provides keyboard shortcut cheat sheets for a list of supported applications. Users can add custom CheatSheets for apps that are not yet supported and can submit an app for future inclusion.
ClipAngel is a clipboard manager that captures clipboard objects and lets the user select and paste one into any program. It supports text, HTML, RTF, file and image clipboard formats. History is stored encrypted on disk, and it requires .NET Framework 4.52 or later.
A site offering one-line shell challenges intended to help users improve their command-line skill. The interface accepts commands with keyboard shortcuts for history, completion and clearing the line. The site lists solutions and was built using JavaScript, Openmoji and Golang.
Cosmos is a keyboard generator that designs keyboards around a hand scan taken with a phone camera. Users can add trackballs, trackpads, encoders or OLED displays, choose among MX, Choc, NIZ and Alps switches, and export models as STLs or STEP files. Assembled keyboards can be ordered through partner builders, and specialized PCBs are also sold.
CrystalDiskInfo is a HDD/SSD utility software which supports a part of USB, Intel RAID and NVMe. It runs on Windows and Server releases, with NVMe support requiring Windows 10/Server 2016 or later. Key features listed include S.M.A.R.T. information, AAM/APM control, graphs, alert mail and resident alarm.
CrystalDiskMark is a disk benchmark tool for Windows. It measures sequential and random read, write, and mixed performance, with several measure modes. It runs on Windows XP through 11 and Windows Server editions on x86, x64, and ARM64 architectures. The documentation notes that benchmarks may shorten SSD or USB memory life and that results are not compatible between major versions.
CustomFolder is a free Windows utility that lets users customize folders with their own icons, colors and emblems. It offers 5 icon templates, 16.7 million colors and 64 built-in emblems, up to 9 per icon, and one design can be applied to many folders at once. It runs on Windows 10/11 and is also available as a portable version.
DaltonLens is a project offering software and technical posts about color blindness, aiming to simplify the life of color blind people with utility software and a technical blog. Software includes a desktop utility for macOS, Windows and Linux and an online color blindness simulator. Development includes DaltonLens-Python and libDaltonLens.
De-Bloater is an application that uses Magisk, Kernel SU or APatch to de-bloat unwanted applications systemlessly. It removes system applications from /system, /vendor and /product directories, requires a reboot, and can restore de-bloated apps individually or as a whole.
Denodo Test Drives are free cloud sandbox environments for exploring data virtualization with the Denodo Platform. Each test drive contains a preconfigured solution and a step-by-step guide for demonstrating how data virtualization works across multiple data sources without replication. The page lists test drives for Agile BI and Analytics and for Data Catalog and Data Science.
Deskreen is an open source desktop application that shares a computer screen to any device with a web browser over WiFi, such as a phone, tablet, other computer or smart TV. It can mirror the entire display or limit sharing to a single application window, and multiple devices can connect at the same time.
Device Cleanup Tool is a portable utility that lists non-present devices and allows for easy removal. It displays device name, class and last time used, and permits selecting multiple devices or all at once for removal. A video tutorial and command-line version are available. It requires Windows 11, 10, 8 or 7 and is freeware.
DeviceTests is a technology website that offers guides, how-to articles, and computer tests for evaluating PC components, accessories, gadgets, and software, with the aim of helping users expand their technical knowledge across technology topics.
Dimmer is a free, small Windows application designed to adjust the brightness of computer screens, monitors and displays. It supports multiple connected screens with individual brightness controls for each device. The tool is intended for use in near or total darkness when a display's minimum native brightness setting is still too bright. It works with LCD, TFT, LED backlit and older CRT display types.
Display Calc is a calculator that checks whether a display is retina, finds the distance at which it becomes retina, and computes screen dimensions and PPI. It accepts an aspect ratio preset or custom ratio, a resolution, and any one physical dimension, updating the others automatically. The result can be used to set Photoshop to accurate print size.
Display Driver Uninstaller is a freeware driver removal utility for Windows that removes AMD, NVIDIA and Intel graphics drivers and packages, including registry keys, folders, files and driver store. Version 18.1.6.1 adds Qualcomm cleanup options and more selective handling of driver extensions. Safe Mode is recommended for stability.
DisplayFusion is a multi-monitor utility from Binary Fortress Software. It adds taskbars to each monitor, offers window management functions and monitor configuration with splitting and bezel padding, and includes customizable hotkeys, wallpaper handling and scripted functions. A free trial runs for 30 days, after which a free version can be used.
Dortania's OpenCore Install Guide covers installing macOS on an X86-based PC and explaining how a Hackintosh works. It describes OpenCore as a boot loader that injects data such as SMBIOS, ACPI tables and kexts for macOS, and states the guide is not a simple one-click install setup.
DriversCollection.com is a free web library of device drivers for computer hardware. The site lists drivers for notebooks, video, printers, mainboards and other hardware categories, searchable by manufacturer. It states that drivers are stored on its servers and are available for free download.
dua (Disk Usage Analyzer) is a Rust tool to conveniently learn about the disk usage of directories. It is parallel by default and optionally deletes superfluous data. An interactive mode is launched with dua i for exploring and deleting files. It is distributed via Cargo and various package managers.
A GitHub Gist guide for uninstalling Microsoft Edge. It instructs users to run Windows Update on the latest supported Windows versions, then open PowerShell as administrator and run a script to completely uninstall Edge. The guide notes the Microsoft Edge Update service might remain because it is required for updating WebView2.