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Icon Shelf is a free and open source icon manager for web developers. It connects to a web project's assets folder and does not add extra files to it. Icons can be organized by collections, previewed, and searched, and copied as import statements for frameworks including React, Vue, Svelte and Ember. It runs on macOS, Windows and Linux.
Odoo offers a free, open-source website builder and CMS. The AI-powered configurator creates a website through steps including setting business type, selecting a color palette, uploading a logo and picking a theme. Pages are built with drag-and-drop blocks, and features include mobile responsiveness, translation, SEO tools and analytics.
Open UI is a W3C Community Group that aims to let web developers style and extend built-in web UI components and controls such as dropdowns, checkboxes, radio buttons, and date or color pickers. The group plans to specify component parts, states, behaviors, accessibility requirements and test suites, and to implement polyfills for extensible controls.
PublicWWW is a source code search engine that searches HTML, JavaScript, CSS and plain text in web page source code, supporting queries such as regex and ccTLDs. It also offers an API and an MCP server for AI assistants.
A web hosting provider offering free web hosting along with shared, semi-dedicated and VPS hosting, domain registration, SSL certificates and site-building tools such as the Zacky Website Builder and app installer. Support is offered around the clock, with automatic data backups and a multi-domain shared hosting setup.
RTutor is a website and open-source project for analyzing data; users upload data, ask questions, and receive results in seconds. The site states that the RTutor website and source code are free for non-profit organizations only, with licensing required for commercial use. It also notes an 8-minute YouTube video for first-time users.
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.
SITE123 is a free website builder that requires no design or coding skills. It provides a website editor, responsive design, free hosting, SEO tools, online store and blog features. A free plan includes 250 MB storage and bandwidth on a subdomain, while premium plans add a free domain for one year and domain connection. Support is available 24/7 by live chat.
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.
Wappalyzer is a service for sales and GTM teams that builds technographic prospect lists, enriches CRM records, and monitors competitor installs using data from millions of websites. Its technology lookup reveals the technologies, company details, and contact data behind a website, while website alerts notify teams of stack changes at monitored sites.
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.
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.
A website collecting cheat sheets, round-ups, quick reference cards and quick reference guides on a single page, organized by topics such as .NET, Ada, Adobe Systems, AJAX, Algebra and Amazon Web Services. Entries link to external PDF or HTML documents and list official project websites.
Codeberg is a non-profit, community-led effort providing services to free and open-source projects, including Git hosting using Forgejo, Pages, CI/CD and a Weblate instance. It is maintained by the non-profit organization Codeberg e.V., based in Berlin, Germany, and states it charges users no money and relies on optional donations. Its community includes developers, artists, academics, hobbyists and professionals.
A site offering side-by-side comparisons of programming languages and their compilers or runtimes. Benchmark tests are executed in a single CI job, and the static website is regenerated once a change is merged into the main branch. It aims to compare performance differences between languages and between compilers or runtimes of the same language.
125mb.com offers free web hosting with 24/7 support and support for PHP, Perl, CGI, Python and Ruby, plus domain registration, SSL certificates and VPS hosting. Paid shared, semi-dedicated and VPS hosting plans are also offered, with shared hosting starting at a monthly rate.
A site offering coding articles on topics such as Git, JavaScript and web development. The listing reports 694 articles, browsable by collection, with popular and latest content shown, including pieces on Git aliases, a JavaScript LeetCode solution and the Speculation Rules API.
Accessibility Cheatsheet is a page by Moritz Glantz offering practical approaches to Universal Design for making websites and webapps accessible to everyone. It covers semantic HTML, text alternatives for non-text content, form labels, visible focus indicators, sufficient contrast, descriptive links, captions and enabling pinch and zoom.
A curated collection of tools and resources for web designers and developers, described as 755 links and counting. Entries include free resources such as the TinyPNG image compression service and the CSS Zen Garden demonstration.
Anvil is a Python-based drag-and-drop web app builder. It provides a visual designer, Python in the browser and on the server, and one-click deployment. Apps are automatically hosted, and deployment environments map a URL or Uplink key to a version of the app with its configuration. Apps can be exported from the cloud editor and hosted on a computer using the open-source Anvil App Server.
The Apache HTTP Server is an open-source web server for modern operating systems. It offers flexible configuration, TLS/SSL and authentication modules, multi-processing modules, HTTP/2, content caching, reverse proxy support and more than 100 modules. It runs on Linux, Windows, macOS and most Unix-like systems. Version 2.4.69 was released 2026-10-01, and version 2.2 is end-of-life.
Astro is a JavaScript web framework for building content-driven websites. It renders components on the server and sends HTML to the browser, and it works with content from the file system, external APIs, or a CMS. It includes content collections, view transitions, optimized images, middleware, and deployment adapters.
Atheos is an open source, web-based cloud IDE and code editor built on top of Codiad. It has a small footprint, supports 40+ languages, and requires a server with Apache2 and PHP.
Automate the Boring Stuff with Python is a book by Al Sweigart, free to read under a Creative Commons license. It teaches Python fundamentals and projects for automating tasks such as searching the web, editing files and spreadsheets, and handling email.
