Browse free open source HTML/XHTML software and projects below. Use the toggles on the left to filter open source HTML/XHTML software by OS, license, language, programming language, and project status.

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  • 1
    Dompdf

    Dompdf

    HTML to PDF converter for PHP

    dompdf is an HTML to PDF converter. At its heart, dompdf is (mostly) a CSS 2.1 compliant HTML layout and rendering engine written in PHP. It is a style-driven renderer, it will download and read external stylesheets, inline style tags, and the style attributes of individual HTML elements. It also supports most presentational HTML attributes. PDF rendering is currently provided either by PDFLib or by a bundled version the R&OS CPDF class written by Wayne Munro. (Some important changes have been made to the R&OS class, however). In order to use PDFLib with dompdf, the PDFLib PECL extension is required. Using PDFLib improves performance and reduces the memory requirements of dompdf somewhat, while the R&OS CPDF class, though slightly slower, eliminates any dependencies on external PDF libraries.
    Downloads: 108 This Week
    Last Update:
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  • 2
    Twemoji

    Twemoji

    Simple library that provides standard Unicode emoji for all platforms

    Twitter’s open source emoji has you covered for all your project's emoji needs. With support for the latest Unicode emoji specification, featuring 3,245 emojis, and all for free. As an open source project, attribution is critical from a legal, practical and motivational perspective in our opinion. The graphics are licensed under the CC-BY 4.0 which has a pretty good guide on best practices for attribution. Although there are two kinds of parsing supported by this utility, we recommend you use DOM parsing, explained below. Each type of parsing accepts a callback to generate an image source or an options object with parsing info. The second kind of parsing is string parsing. This is unrecommended because this method does not sanitize the string or otherwise prevent malicious code from being executed; such sanitization is out of scope.
    Downloads: 45 This Week
    Last Update:
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  • 3
    An implementation of DSSSL, a style language to format SGML or XML documents. OpenJade contains backends for various formats (RTF, HTML, TeX, MIF, SGML2SGML, and FOT). This project also maintains OpenSP.
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    Downloads: 266 This Week
    Last Update:
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  • 4
    Tidy

    Tidy

    The granddaddy of HTML tools, with support for modern standards

    Tidy is a console application for macOS, Linux, Windows, UNIX, and more. It corrects and cleans up HTML and XML documents by fixing markup errors and upgrading legacy code to modern standards. libtidy is a C static and dynamic library that developers can integrate into their applications in order to bring all of Tidy’s power to your favorite tools. libtidy is used today in desktop applications, web servers, and more. Tidy tidies HTML and XML. It can tidy your documents by itself, and developers can easily integrate its features into even more powerful tools. Thanks for the efforts of HTACG and prominent contributors, HTML Tidy has a whole new heartbeat and a whole new life.
    Downloads: 30 This Week
    Last Update:
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  • 5
    Froala Editor

    Froala Editor

    The next generation Javascript WYSIWYG HTML Editor

    Froala Editor is a lightweight WYSIWYG HTML Editor written in Javascript that enables rich text editing capabilities for your applications. Froala WYSIWYG HTML Editor is one of the most powerful JavaScript rich text editors ever. Froala Rich Text Editor has a vast range of both simple and complex features for all kind of use cases. Lots of features don't have to overwhelm the user with hundreds of buttons. The Froala's WYSIWYG editor smart toolbar can accommodate over 100 features in this simple interface. The Froala Smart Toolbar groups all actions by scope into 4 categories. It's an intuitive toolbar where every feature is easy to find and your most used ones are there for you. A WYSIWYG HTML editor created by developers, for developers. With a powerful API and documentation you can get started in minutes.
    Downloads: 28 This Week
    Last Update:
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  • 6
    Bootstrap

    Bootstrap

    HTML, CSS and JS framework for developing responsive websites and apps

    Bootstrap is an HTML, CSS, and JS framework designed for developing responsive, mobile first projects on the web. It's one of the most popular front-end frameworks and for good reason: it simply makes web development faster and easier. People of all skill levels can create projects of all sizes with Bootstrap, and for all types of devices too. With Bootstrap, you get a host of nifty features such as precompiled CSS, impressive scalability, dozens of custom HTML and CSS components and more.
    Downloads: 26 This Week
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  • 7
    tabler

    tabler

    Tabler is free and open-source HTML Dashboard UI Kit

    Tabler is fully responsive and compatible with all modern browsers. Thanks to its modern, user-friendly design you can create a fully functional interface that users will love! Choose the layouts and components you need and customize them to make your design consistent and eye-catching. Every component has been created with attention to detail to make your interface beautiful! We've created this admin panel for everyone who wants to create templates based on our pre-made components. Our mission is to deliver a user-friendly, clear and easy administration panel that can be used by both simple websites and sophisticated systems. The only requirement is basic HTML and CSS (and some Liquid) knowledge, as a reward, you'll be able to manage and visualise different types of data in the easiest possible way! With the support for mobile, tablet and desktop displays, it doesn’t matter what device you’re using. Tabler is responsive in all major browsers.
    Downloads: 26 This Week
    Last Update:
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  • 8
    XDXF - XML Dictionary Exchange Format
    XDXF is a project to unite all existing open dictionaries and provide both users and developers with universal XML-based format, convertible from and to other popular formats like Mova, PtkDic, StarDict, ABBYY Lingvo etc. * New drafts of format can be found here: https://github.com/soshial/xdxf_makedict/tree/master/format_standard * The development of dictionary converter moved to Github: https://github.com/soshial/xdxf_makedict
    Downloads: 102 This Week
    Last Update:
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  • 9
    CKEditor 5

    CKEditor 5

    Powerful rich text editor framework with a modular architecture

    CKEditor 5 is a powerful rich text editor framework with a modular architecture, modern integrations, and features like collaborative editing. CKEditor 5 provides every type of WYSIWYG editing solution imaginable. From editors similar to Google Docs and Medium, to Slack or Twitter like applications, all is possible within a single editing framework. Builds are ready-to-use solutions to common editing needs. Every build can be customized to include a completely custom set of features. Features are flexible. You can write a custom feature once, and reuse it everywhere! CKEditor 5 is an ultra-modern JavaScript rich text editor with MVC architecture, custom data model and virtual DOM. It is written from scratch in ES6 and has excellent webpack support. Native integrations with Angular, React and Vue.js are available for your convenience. Building a mobile or cross-platform desktop application with JavaScript? CKEditor 5 is compatible with Electron and mobile devices (Android, iOS).
    Downloads: 10 This Week
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  • 10
    Lexbor

    Lexbor

    Lexbor is development of an open source HTML Renderer library

    Lexbor is the development of a web browser engine available as a software library; it ships with a free license and has no extra dependencies. For us, speed is an absolute must-have. In our development process, we focus on fastest parsing techniques for HTML, CSS, and fonts, fastest data processing methods, and fastest ways to serve content to end users. Whether you are building a backend that handles millions of HTML documents or a UI-heavy user app, your software’s response rate always matters to users and developers alike. Lexbor’s code is optimized for ease of access in end-user applications and across programming languages. You can effortlessly wrap all the capabilities of the library in, say, Python to power your end-user or backend applications in a new environment. In other words, lexbor offers a feature-rich core that developers can build upon as they see fit.
    Downloads: 7 This Week
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  • 11
    NekoHTML is a simple HTML scanner and tag balancer that enables application programmers to parse HTML documents and access the information using standard XML interfaces.
    Downloads: 26 This Week
    Last Update:
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  • 12
    RuoYi

    RuoYi

    The warehouse's SpringBoot-based rights management system

    The warehouse's SpringBoot-based rights management system is easy to read and understand, and the interface is simple and beautiful. The core technology uses Spring, MyBatis, and Shiro without any other heavy dependencies. I have always wanted to make a background management system, and I have seen many excellent open source projects but found no suitable ones. So I started to write a background system in my spare time. So there is Zoe. She can be used for all web applications, such as website management background, website member center, CMS, CRM, OA. All front-end and back-end codes are very compact and easy to use after encapsulation, and the probability of errors is low. Also supports mobile client access. The system will continue to update some useful functions. The user is the system operator, and this function mainly completes the system user configuration. Configure the system organization (company, department, group).
    Downloads: 5 This Week
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  • 13
    CoreUI

    CoreUI

    Open Source UI Kit built on top of Bootstrap 5 and plain JavaScript

    CoreUI Admin Panel is not another blend of 3rd parties free components and libraries. It's the only Open Source Bootstrap Admin Dashboard Template built on the enterprise-grade hand-crafted UI Components Library created and backed by professionals. CoreUI and CoreUI PRO are delivered with fully-featured, and ready-to-use admin panel templates for your application. Save thousands of development hours by using ready-made, reusable, and commonly used widgets and UI components. Moreover, CoreUI Bootstrap Admin Template is delivered with a ready-to-use environment, so you don't have to waste time configuring the project. All build scripts and tools are ready to use out of the box. With CoreUI Template you can start a new project in a minute!
    Downloads: 4 This Week
    Last Update:
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  • 14
    miniblink49

    miniblink49

    Lighter, faster browser kernel of blink to integrate HTML UI in apps

    miniblink is an open source, one file, small browser widget based on chromium. By using C interface, you can create a browser with just some line code. miniblink is an open source, single-file, and currently the smallest known chromium-based browser control. Through its exported pure C interface, a browser control can be created in a few lines of code. C++, C#, Delphi and other language calls (support C++, C#, Delphi language to call). Embedded Nodejs, support electron (with Nodejs, can run electron). Customize as you wish, simulate another browser environment. Perfect HTML5 support, friendly to various front-end libraries (support HTML5, and friendly to front framework). After turning off the cross-domain switch, you can use various cross-domain functions (support cross-domain). Headless mode, which greatly saves resources and is suitable for crawlers (headless mode, be suitable for Web Crawler).
    Downloads: 4 This Week
    Last Update:
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  • 15
    Halfmoon

    Halfmoon

    Front-end framework with a built-in dark mode

    Front-end framework with a built-in dark mode and full customizability using CSS variables; great for building dashboards and tools. Halfmoon is a responsive front-end framework that is great for building dashboards and tools. Built-in dark mode, full customizability using CSS variables (around 1,500 variables), optional JavaScript library (no jQuery), Bootstrap-like classes, and cross-browser compatibility (including IE11). Halfmoon comes with a built-in, toggleable dark mode, which is one of its most important and defining features. The framework is built entirely using CSS variables (also known as CSS custom properties). There are close to 1,500 CSS variables, which means that almost everything can be customized by overriding a property, making it very easy to theme Halfmoon to fit your brand. Learn more about customization. The components have a very standard look and feel to them, making them suitable for dashboards and tools.
    Downloads: 3 This Week
    Last Update:
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  • 16
    Html Menu Generator

    Html Menu Generator

    Html menu generator

    The spatie/menu package provides a fluent interface to build menus of any size in your PHP application. If you're building your app with Laravel, the spatie/laravel-menu provides some extra treats. All classes provide a human-readable, fluent interface (no array configuration). Additionally, you can opt for a more verbose and flexible syntax, or for convenience methods that cover most use cases. You can programmatically add html classes and attributes to any item in the menu, or to the menu itself. You can add id, so you can easily target some of these elements with CSS or JS. The Laravel version of the menu package adds some extras like convenience methods for generating URLs and macros.
    Downloads: 3 This Week
    Last Update:
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  • 17
    Simple.css

    Simple.css

    Simple.css is a classless CSS template to make a good website

    A classless CSS framework that makes semantic HTML look good. By classless I mean that there are no CSS classes anywhere in the CSS or the HTML. So your website can look just like this using plain old vanilla HTML. When starting a new project, I wanted a CSS framework that would get me up and running quickly, and give me something I could hack on. I got sick of all these giant frameworks that include everything but the kitchen sink, 90% of which I’ll never use. For example, the minified CSS for the Bootstrap framework is 144KB in total. By comparison, Simple.css is around 4KB. Obviously Simple.css and Bootstrap don’t compare in terms of their functionality, but Simple.css allows website developers to spin something up very quickly that looks good and needs very little work. By using something like Simple.css, provides the basics to get up and running quickly (or just use it as-is for a simple, good-looking site) yet not have to learn an extremely convoluted framework.
    Downloads: 3 This Week
    Last Update:
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  • 18
    pup

    pup

    Parsing HTML at the command line

    pup is a command line tool for processing HTML. It reads from stdin, prints to stdout, and allows the user to filter parts of the page using CSS selectors. Inspired by jq, pup aims to be a fast and flexible way of exploring HTML from the terminal. If you have Go installed on your computer just run go get. If you're on OS X, use Homebrew to install (no Go required). By default pup will fill in missing tags and properly indent the page. CSS selectors have a group of specifiers called "pseudo classes" which are pretty cool. pup implements a majority of the relevant ones them. When combining selectors, the HTML nodes selected by the previous selector will be passed to the next ones. Non-HTML selectors which effect the output type are implemented as functions which can be provided as a final argument. Print the values of all attributes with a given key from all selected nodes.
    Downloads: 3 This Week
    Last Update:
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  • 19
    Parsedown

    Parsedown

    Better markdown parser in PHP

    Parsedown is capable of escaping user-input within the HTML that it generates. Additionally Parsedown will apply sanitisation to additional scripting vectors (such as scripting link destinations) that are introduced by the markdown syntax itself. If you wish to allow HTML within untrusted user-input, but still want output to be free from XSS it is recommended that you make use of a HTML sanitiser that allows HTML tags to be whitelisted, like HTML Purifier. In both cases you should strongly consider employing defence-in-depth measures, like deploying a Content-Security-Policy (a browser security feature) so that your page is likely to be safe even if an attacker finds a vulnerability in one of the first lines of defence. Safe mode does not necessarily yield safe results when using extensions to Parsedown. Extensions should be evaluated on their own to determine their specific safety against XSS.
    Downloads: 2 This Week
    Last Update:
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  • 20
    CSSBox

    CSSBox

    Pure Java HTML / CSS rendering engine

    CSSBox is an (X)HTML/CSS rendering engine written in pure Java. Its primary purpose is to provide a complete information about the rendered page suitable for further processing. However, it also allows displaying the rendered document.
    Downloads: 14 This Week
    Last Update:
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  • 21

    HTML parser in Delphi

    A Delphi class with functions to read and dissect a HTML file

    THTMLdom is a (Delphi) class with functions to read a HTML source file and dissect it into a tree of THTMLelement. The attributes of the HTML tags are stored in the elements. Functions are provided to select elements on the basis of the attribute values or tag names. The structure of the tree can be shown and it can be rendered as plain text. The source is plain Delphi pascal, requiring a version that supports Tdictionary. There is no dependency on 3rd party units. The file to be parsed must have valid HTML4/5 tags. It is not necessary that the HTML is ‘correct’ in the sense that end tags may be wrongly placed or be absent altogether. The speed of processing (reading+parsing) is formidable: 15-40 msec per Mbyte or around 1 msec per 1000 HTML tags.
    Downloads: 21 This Week
    Last Update:
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  • 22
    OpenBEXI HTML Builder
    OpenBEXI is a WYSIWYG HTML builder using the magic of HTML5 and CSS3 . By resizing, dragging and dropping various HTML widgets it is easy to build a web page. All texts using the DOJO editor, pictures, charts, chart-flows, Dygraphs, timelines, lists and DOJO widgets edited on your browser look like the HTML page you are going to publish to your web site. OpenBEXI provides a powerful CSS and JavaScript editor to change on the fly the presentation and the behavior of your web pages. Tools allow you to create, manage and publish web projects and HTML pages for Internet.
    Downloads: 7 This Week
    Last Update:
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  • 23
    7.css

    7.css

    A JS-independent, tree-shakeable CSS framework

    7.css is a CSS framework for building interface components that look like Windows 7. It is built on top of the GUI backbone of XP.css, which is an extension of 98.css. This framework relies on the usage of semantic HTML. To make a button, you'll need to use a button. Input elements require labels. Tabs rely on the role="tab" attribute. This page will guide you through that process, but accessibility is a primary goal of this project. It does not ship with any JavaScript, so it is compatible with your frontend framework of choice.
    Downloads: 1 This Week
    Last Update:
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  • 24
    Bootstrap Native

    Bootstrap Native

    If you are looking for Bootstrap without jQuery, this is it.

    The lighter and more compact set of JavaScript components for Bootstrap is sourced with a modern ES6+ codebase and strong TypeScript definitions. At about half the size of the original and around 12kb gZipped, this library does most of Bootstrap & Popper combined. We launched the project back in 2015 with the goal of debunking the "write less do more" myth, meanwhile the Bootstrap developers themselves have decided to drop jQuery, however, we decided to keep maintaining the project for its many benefits and the learning experience. If you mainly use Bootstrap plugins for your projects, why not use a much lighter, potentially faster library, see a different perspective on the same challenges, interact with a less crowded community, and get a better chance to learn or say hi! The Alert component covers the specific original events and public methods, but just like the original plugin, does not provide any initialization option.
    Downloads: 1 This Week
    Last Update:
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  • 25
    Cryogen

    Cryogen

    A simple static site generator written in Clojure

    Shipped as a template on Leiningen, a Clojure build tool. No need to configure databases, it just works out of the box. Clear separation between your content and layouts makes for fuss-free customization. CSS and JavaScript can be easily added. Don't worry about linking up your posts or managing your sitemap and RSS feeds, Cryogen does it all. Cryogen is a simple static site generator built with Clojure. It's shipped on Leiningen so setup is fuss free and there's no need to mess with databases or other CMS systems. Cryogen reads through a directory containing your Markdown content, compiles it into HTML and injects the content into your templates with the Selmer templating system. It then spits out a ready-to-publish website complete with a sitemap and RSS feed. Cryogen uses Selmer templating engine for layouts. Please refer to its documentation to see the supported tags and filters for the layouts.
    Downloads: 1 This Week
    Last Update:
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