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Selenium is an umbrella project of tools and libraries for automating web browsers. It provides extensions to emulate user interaction and infrastructure for W3C WebDriver implementations, letting developers write interchangeable code for major browsers. It is primarily used for automating web applications for testing.
StackBlitz is a collaborative browser-based IDE for web developers that runs development environments inside the browser through WebContainers, avoiding time-consuming local configuration. It also offers Bolt, which turns text into working web apps in the browser. The free Personal plan includes unlimited public projects and GitHub repositories.
Storybook is a frontend workshop for building UI components and pages in isolation. It helps developers develop and share hard-to-reach states and edge cases without running the whole app, and supports UI development, testing and documentation. It is open source and free.
Surge is a static web publishing service for front-end developers that deploys projects from the command line to a CDN. It offers free custom domain support, free SSL for surge.sh subdomains, pushState support for single page apps, custom 404.html pages, and a CLI. Projects can be deployed through build tools such as Grunt, Gulp, Git Hooks, and npm run scripts.
swizzin community edition is an all-in-one modular seedbox solution installed via curl or wget as root. It supports Debian and Ubuntu LTS systems and requires a 64-bit processor such as x86_64 or aarch64. A repository of applications, including autodl, ZNC and others, can be installed.
The Apache OpenOffice Templates site offers downloadable templates to enhance Apache OpenOffice. Templates are searchable and filterable by category (Business, Education, Private) and by application (Calc, Draw, Impress, Writer), and can be sorted by highest rated, most popular, or most recent.
A family of online interpreters for a growing list of practical and recreational programming languages. Users pick a language and type code, which is sent to a sandboxed TIO arena for execution and results returned to the browser. Code and input can be shared through a client-side permalink. The web app is free of charge, ad-free, and does not use tracking cookies.
UHostFull.com advertises free unlimited web hosting with unlimited space and bandwidth, instant activation, no forced ads, and MySQL databases. It also mentions a website control panel, virus scanner, spam filter, and one-click install applications. The service describes professional PHP and MySQL hosting on clustered technology with 1 Gbps server connections.
A curated list of tools and programs for developers, devops, admins, and others, organized into categories such as architecture and diagrams, API development, and backup and archiving. Most listed items are open source, though not all, and the page advises checking applicable licences. The project is hosted on GitHub.
Vercel provides agentic infrastructure and a platform for building and deploying applications and AI agents. Its offerings include an autonomous stack that supports scalable app deployment, sandboxed environments for agent operation, AI model gateway access, and durable orchestration tools, used by organizations including Notion and Zapier.
Vite is a frontend build tool for web applications, offering on-demand source file serving over native ESM with dependency pre-bundling and instant hot module replacement. It provides a plugin system extending Rollup's plugin interface, fully typed APIs, and first-class server-side rendering support. The project is MIT licensed and described as free and open source.
A WebAIM tool for checking foreground and background color contrast in RGB hexadecimal format or with a color picker. It reports a contrast ratio and WCAG AA and AAA pass/fail states for normal text, large text, graphical objects and user interface components. It also functions as a basic API when &api is appended to a permalink.
Webmin is a web-based system administration tool for Unix-like servers. It can configure operating system internals such as users, disk quotas, services and configuration files, and control open-source applications including BIND DNS Server, Apache HTTP Server, PHP and MySQL.
A Microsoft Learn design section that explains how to design Windows app experiences using Fluent Design principles, accessibility guidance, layout patterns, motion and visual styles. It provides guidance on color, materials, typography, icons, navigation and usability.
WinMerge is an open-source differencing and merging tool for Windows. It compares folders and files, presenting differences in a visual text format, and is useful for determining what has changed between project versions and merging changes. It can be used as a standalone application or as an external differencing/merging tool.
WireMock Cloud is environment simulation infrastructure for agents and applications. It provides stateful API simulations that update with each commit and run on laptops, in CI, and in clusters, with on-demand latency, errors, outages and edge cases. Simulations can be created as code, through a collaborative cloud UI, or agentically.
WordPress is an open-source blog tool, publishing platform, and content management system. It can be used to build websites, blogs, or applications. The platform is used by millions of websites globally, ranging from individual creators and small businesses to large enterprises, and offers tools for design, content building, and extension via plugins, themes, and community resources.
Yaak is a local-first API client that stores requests on the user's machine and can sync workspaces to the filesystem for use with Git. It supports REST, GraphQL, WebSocket, gRPC and SSE requests, and includes an CLI and an MCP server plugin for working with AI agents, without built-in AI. A desktop app is available for Mac, Windows and Linux.
