Twine is an open-source tool for telling interactive, nonlinear stories. Simple stories can be made without writing code, and stories can be extended with variables, conditional logic, images, CSS and JavaScript. Twine publishes directly to HTML, and creations are free to use, including for commercial purposes. It is available as a desktop app or in a browser.
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PKMN.help is a Pokémon Type Calculator web application. The page shows a loading state and states that the app requires JavaScript to continue. It includes troubleshooting steps for desktop and mobile browsers and a contact email for loading difficulties.
TypeRush is an online typing race game in which players race against others by typing fun facts. It offers country leaderboards, a global league, and vehicle upgrades earned through races. The game runs on desktop, laptop and mobile devices with a physical or virtual keyboard.
Übersicht is a free, open-source macOS app that runs system commands and displays their output on the desktop in widgets. Widgets are written with HTML5, can show data in tables, charts and graphs, and can react to different screen sizes. Widgets use JavaScript and React's JSX.
Ueli is a system utility for Windows, hardware checks, cleanup, process control, or desktop customization.
ugiffer is an image tool for editing, cropping, design, memes, graphics, or visual publishing.
UHD Wallpaper hosts wallpapers in 4K, 8K and 1920x1080 resolutions for PCs, laptops, phones, tablets and other devices. The site lists anime, fantasy, cyberpunk and game-themed backgrounds, along with a Next link for further pages.
UltraUXThemePatcher modifies system files so that third-party Windows themes can be used. It backs up the original system files, and changes can be undone by uninstalling. It is available for Windows XP to Windows 11 in 32-bit and 64-bit versions. The author warns that modifying system files can cause unexpected problems or a total breakdown of Windows.
Universal x86 Tuning Utility is a lightweight tool designed to help users optimize the performance and settings of x86 laptops and desktop computers. It is developed by the team behind applications including Ryzen Controller, Renoir Mobile Tuning and Power Control Panel, and acts as an alternative to tools such as Ryzen Master and Intel XTU. The utility provides fine-grained control over device processors and GPUs, allowing users to adjust clock speeds, power limits, voltages and other performance-related parameters.
unixporn is a Linux/Unix desktop customization community that describes itself as the home for *nix customization. Through it, members share screenshots, get inspiration, post tutorials and share config files. Related links include a subreddit, a Discord chat, a GitHub presence for community projects and a wiki with theming guides and tutorials.
Unlimited is an image tool for editing, cropping, design, memes, graphics, or visual publishing.
Untap.in is a free, browser-based table for play-testing trading card game decks. Users can build decks from card databases, import decklists, play live against opponents, goldfish solo, run drafts, and spectate matches. It runs on desktop, tablet, and phone without downloads and does not enforce game rules.
UpperPix is a collection of free browser-based image tools. It converts JPG, PNG, WebP, AVIF and ICO files, compresses images, resizes files in bulk, generates favicons and ICO files, and merges, splits or compresses PDFs. Processing happens locally with no upload and no registration.
Upscayl is a free and open source AI image upscaler for Linux, MacOS and Windows. It uses AI to upscale images, offers multiple models and batch processing, and can enhance images by up to 16x.
Vagrantup is a system utility for Windows, hardware checks, cleanup, process control, or desktop customization.
Vcredist is a system utility for Windows, hardware checks, cleanup, process control, or desktop customization.
Vervette Fluid Sandbox v1.6 is a fluid-dynamics-based painter that runs in browsers, described as a developing online version of Verve Painter by Taron. Settings cover brush opacity, matter, softness, size, fluid speed, smudge and slip, lighting distance and bump, along with hotkey customization, paint modes and texture options.
Vesktop is a desktop client for Discord. It includes Vencord for plugins and themes, is open source without tracking or telemetry, blocks Discord telemetry, and is built with Linux in mind.
VHS-Engine is a free online tool that applies VHS tape effects to photos in the browser, including scanlines, glitch, chromatic aberration and tape grain. It requires no signup and photos never leave the device.
VibePaint.ai is a browser-based generative AI design studio that converts freehand sketches into rendered digital art. Users draw on an HTML5 canvas or upload reference art, choose from visual styles and projection surfaces, and receive high-resolution exports. Videos of up to 10 seconds can serve as references.
Vicinae is a keyboard-first launcher for the desktop. It provides a single interface for applications, file search, clipboard history, a calculator, an emoji picker, window management, browser tabs, fonts, theming, power management, shortcuts and scripts. Extensions can be built with React and TypeScript, and many Raycast extensions and script commands can run out of the box. It is free and open source.
Virt-Manager is a desktop user interface for managing virtual machines through libvirt. It primarily targets KVM VMs, and also manages Xen and LXC containers. It shows a summary view of running domains with live performance and resource statistics, and includes wizards for creating domains and adjusting resource allocation and virtual hardware. An embedded VNC and SPICE client viewer provides a graphical console to the guest domain.
VirtualBox is general-purpose full virtualization software for x86_64 hardware, with version 7.1 additionally for macOS/Arm and version 7.2 also for Windows/Arm. It targets laptop, desktop, server and embedded use. The project is a community effort backed by Oracle, and releases include 7.2 maintenance releases that improve stability and fix regressions.
VirtualCustoms is a system utility for Windows, hardware checks, cleanup, process control, or desktop customization.