Showing 550 open source projects for "markup"

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  • Demo Series - Small Business Backup By Veeam Icon
    Demo Series - Small Business Backup By Veeam

    Learn how to protect your Microsoft 365 data, with simple, actionable tips today.

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    PRTG Catches Network Issues Before They Cause Downtime

    Threshold-based alerts flag problems early, so your team can act before users notice, not after.

    Reactive troubleshooting usually means hearing about a problem from frustrated users, not your monitoring tool. PRTG sets threshold-based alerts across devices, servers and applications, notifying your team by email, SMS or push the moment a metric crosses a set limit. That means catching a failing disk or overloaded server before it becomes an outage and getting time back from firefighting. Start a free trial and set your first alerts today.
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  • 1
    Complete Intro to Web Dev v3

    Complete Intro to Web Dev v3

    The Complete Intro to Web Dev v3, as taught on Frontend Masters

    Complete Intro to Web Dev v3 is the course repository for Brian Holt’s beginner web development class on Frontend Masters. It is designed for learners with little or no coding experience. The lessons introduce HTML for page structure, CSS for visual design, and JavaScript for interactive behavior. Students practice browser tools, editors, debugging, responsive layouts, and common development workflows. The material builds toward creating a complete web application rather than isolated syntax...
    Downloads: 2 This Week
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  • 2
    h5ai

    h5ai

    HTTP web server index for Apache httpd, lighttpd and nginx

    h5ai is a modern file indexer for HTTP web servers with a focus on your files. Directories are displayed in an appealing way and browsing them is enhanced by different views, a breadcrumb and a tree overview. Initially, h5ai was an acronym for HTML5 Apache Index but now it supports other web servers too. Requires PHP 7.0+ and works fine with Apache httpd, lighttpd and nginx. Best user experience with the latest versions of Chromium-based browsers, Firefox, Safari and Edge, but a static...
    Downloads: 5 This Week
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  • 3
    MathJax

    MathJax

    Beautiful and accessible math in all browsers

    A JavaScript display engine for mathematics that works in all browsers. No more setup for readers. It just works. MathJax provides tools to transform your content from traditional print sources into modern, accessible web content and ePubs. The MathJax team is available to train your staff in using our resources for preparing online teaching material and creating accessible STEM content. MathJax is highly flexible and can be tailored to the needs of your institution by creating customized...
    Downloads: 9 This Week
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  • 4
    HTML5 Security Cheatsheet

    HTML5 Security Cheatsheet

    A collection of HTML5 related XSS attack vectors

    H5SC, or the HTML5 Security Cheatsheet, is a public reference collection for researching browser-based cross-site scripting behavior. It catalogs HTML5-related XSS vectors so security professionals can compare how markup, browser features, and parsing behavior affect injection risks. The repository also includes supporting files intended for controlled XSS testing. A collection of lesser-known browser behaviors helps researchers investigate edge cases that ordinary checklists may miss. Redirect utilities cover several URI schemes and HTTP status codes used during security experiments. ...
    Downloads: 2 This Week
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  • MongoDB Atlas runs apps anywhere Icon
    MongoDB Atlas runs apps anywhere

    Deploy in 115+ regions with the modern database for every enterprise.

    MongoDB Atlas gives you the freedom to build and run modern applications anywhere—across AWS, Azure, and Google Cloud. With global availability in over 115 regions, Atlas lets you deploy close to your users, meet compliance needs, and scale with confidence across any geography.
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  • 5
    Simple Form

    Simple Form

    Forms made easy for Rails! It's tied to a simple DSL

    Simple Form is a Ruby on Rails gem that simplifies form-building by providing a clean DSL for generating HTML forms. It works alongside Rails form helpers and supports integration with Bootstrap, Tailwind, and custom markup—allowing developers to write forms quickly without compromising layout flexibility.
    Downloads: 0 This Week
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  • 6
    Claude SEO

    Claude SEO

    Universal SEO skill for Claude Code

    Claude SEO is an open-source Claude Code skill suite for running structured SEO analysis through AI-assisted workflows. It combines 25 sub-skills and 18 specialist agents across technical SEO, content quality, Schema.org markup, GEO and AEO, local SEO, e-commerce, international SEO, backlinks, semantic clustering, and Google API workflows. The system is designed to produce prioritized action plans instead of generic audit notes. Recommendations include first-principle observations, dependency relationships, falsifiability checks, and leading indicators. ...
    Downloads: 3 This Week
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  • 7
    BAT

    BAT

    A cat(1) clone with syntax highlighting and Git integration

    A cat(1) clone with syntax highlighting and Git integration. By default, bat pipes its own output to a pager (e.g. less) if the output is too large for one screen. If you would rather bat work like cat all the time (never page output), you can set --paging=never as an option, either on the command line or in your configuration file. If you intend to alias cat to bat in your shell configuration, you can use alias cat='bat --paging=never' to preserve the default behavior. Even with a pager...
    Downloads: 7 This Week
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  • 8
    ShortGPT

    ShortGPT

    AI framework for automated short video creation and editing tools

    ...It can automatically assemble videos by combining generated scripts, sourced media assets, captions, and synthesized voice narration. A modular editing system based on structured markup and JSON allows editing steps to be broken into manageable components that can be interpreted by language models.
    Downloads: 3 This Week
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  • 9
    Material Tailwind

    Material Tailwind

    Easy-to-use components library for Tailwind CSS and Material Design

    Material Tailwind is an open-source library that uses the power of Tailwind CSS and React to help you build unique web projects faster and easier. The stunning design inspired by Material Design is a bonus. Enhance your workflow with seamless integrations for your favorite tools using Material Tailwind.
    Downloads: 0 This Week
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  • 10
    notfoundbot

    notfoundbot

    fix & archive outgoing links on your website

    notfoundbot is a GitHub Action that helps you automatically maintain the correctness of your website's outgoing links. It finds links that need fixing and opens pull requests that fix them. This action is intended for websites and blogs powered by static site generators. By using post dates derived from filenames, notfoundbot searches for Wayback Machine archives of linked resources that are contemporary to the post itself: broken links in a 2011 blog post will be linked to archives from...
    Downloads: 0 This Week
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  • 11
    lightGallery

    lightGallery

    A customizable, modular, responsive, lightbox gallery plugin

    A lightweight, modular, JavaScript image and video lightbox gallery plugin. Available for React.js, Vue.js, Angular, and TypeScript. lightGallery is built with the most modern technologies available to achieve the best performance and quality. It supports all modern browsers including IE 10 and above. Built with modular architecture. Easily create your own modules, or detach modules that you don't want to use. lightGallery comes with many built-in modules, such as thumbnails, zoom, etc....
    Downloads: 2 This Week
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  • 12
    AstroPaper

    AstroPaper

    A minimal, accessible and SEO-friendly Astro blog theme

    ...The theme includes light and dark modes, dynamic Open Graph image generation, image lightboxes, callouts, and social sharing controls. Accessibility features cover semantic markup, keyboard navigation, ARIA labels, screen-reader support, and strong color contrast. Configuration is centralized so users can customize site metadata, appearance, publishing behavior, and optional features without rebuilding the theme architecture.
    Downloads: 1 This Week
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  • 13
    Kamal

    Kamal

    Deploy web apps anywhere

    ...Kamal seeks to bring the advance in ergonomics pioneered by these commercial offerings to deploying web apps anywhere. Whether that’s low-cost cloud options without the managed-service markup from the likes of Digital Ocean, Hetzner, OVH, etc, or it’s your own colocated bare metal. To Kamal, it’s all the same. Feed the config file a list of IP addresses with vanilla Ubuntu servers that have seen no prep beyond an added SSH key, and you’ll be running in literally minutes.
    Downloads: 1 This Week
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  • 14
    jQuery Validation Plugin

    jQuery Validation Plugin

    jQuery Validation Plugin library sources

    ...It makes a good choice if you’re building something new from scratch, but also when you’re trying to integrate something into an existing application with lots of existing markup. The plugin comes bundled with a useful set of validation methods, including URL and email validation, while providing an API to write your own methods. All bundled methods come with default error messages in english and translations into 37 other languages. The plugin was initially written and maintained by Jörn Zaefferer, a member of the jQuery team, lead developer on the jQuery UI team and maintainer of QUnit. ...
    Downloads: 6 This Week
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  • 15
    Pretext

    Pretext

    Pure JavaScript/TypeScript library for multiline text measurement

    ...Pretext encourages a declarative approach where content is written in a way that separates structure from presentation, making it easier to adapt across contexts. It is particularly relevant for developers interested in tooling, documentation systems, or alternative markup paradigms.
    Downloads: 0 This Week
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  • 16
    Reagent

    Reagent

    A minimalistic ClojureScript interface to React.js

    Reagent is a minimalistic ClojureScript interface to React that enables developers to write efficient React components using plain ClojureScript functions and data, leveraging a Hiccup-like syntax and immutable state to simplify UI creation. React is pretty darn fast, and so is Reagent. It should even be faster than plain old javascript React a lot of the time, since ClojureScript allows us to skip a lot of unnecessary rendering (through judicious use of React's shouldComponentUpdate). The...
    Downloads: 0 This Week
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  • 17
    Spectre.Console

    Spectre.Console

    Library that makes it easier to create beautiful console applications

    ...Heavily inspired by Python’s Rich library, it provides advanced styling, layout, and input capabilities for modern terminal UIs. Supports tables, grids, panels, and a Rich inspired markup language. Supports the most common SRG parameters when it comes to text styling such as bold, dim, italic, underline, strikethrough, and blinking text. Supports 3/4/8/24-bit colors in the terminal. The library will detect the capabilities of the current terminal and downgrade colors as needed. Written with unit testing in mind.
    Downloads: 0 This Week
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  • 18
    TanStack Virtual

    TanStack Virtual

    Headless UI for Virtualizing Large Element Lists in JS/TS

    TanStack Virtual is a lightweight, framework-agnostic library that enables high-performance virtualization for long or large lists in web UIs, providing smooth scrolling and responsive rendering by only mounting items visible in the viewport. A headless, framework‑agnostic virtualization library for rendering massive lists, grids, and tables at 60FPS while giving you full control over markup and styles. Virtualizes vertical, horizontal & grid layouts with a single hook/function. Lightweight (10–15kb) yet powerful, with dynamic & measured sizing support. Smooth 60FPS scrolling with sticky items and window‑scrolling utilities.
    Downloads: 0 This Week
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  • 19
    React Hook Form

    React Hook Form

    React Hooks for form state management and validation

    Performant, flexible, and extensible forms with easy-to-use validation. Intuitive, feature-complete API providing a seamless experience to developers when building forms. Leverage existing HTML markup and validate your forms with our constraint-based validation API. Package size matters. React Hook Form is a tiny library without any dependencies. Minimizes the number of re-renders, minimizes validate computation, and faster mounting. Since the form state is inherently local, it can be easily adopted without other dependencies. ...
    Downloads: 0 This Week
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  • 20
    TailwindSQL

    TailwindSQL

    TailwindSQL lets you write SQL queries using Tailwind-style class name

    ...The project is built on SQLite with better-sqlite3 for fast local access, and it supports rendering results in different formats such as text, lists, tables, or JSON directly from markup.
    Downloads: 0 This Week
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  • 21
    rate.sx

    rate.sx

    Curl cryptocurrencies exchange rates

    rate.sx is a command-line-friendly cryptocurrency rate service designed to be queried with curl or a browser, returning clean text or minimal markup. It emphasizes human-readable output by default, with options for concise one-liners or richer summaries including sparkline-style ASCII charts. The service supports multiple coins, fiat conversions, and historical lookups so you can compare prices over time without leaving the terminal. Under the hood it aggregates price feeds and normalizes the results for robust querying, yet keeps the interface dead simple. ...
    Downloads: 0 This Week
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  • 22
    HSharp

    HSharp

    HSharp is a library used to analyze markup language like HTML

    HSharp appears to be an experimental C#/.NET project exploring higher-level abstractions or helper patterns (the naming hints at “H#” as a layer or framework on top of C#). It groups together utilities, base classes, and conventions so that common app logic can be written faster and with less boilerplate. The repo acts as a sandbox for testing these patterns in real code, which is helpful if you want to see how the author structures services, models, or infrastructure concerns. Because it’s...
    Downloads: 0 This Week
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  • 23
    CSS Inspiration

    CSS Inspiration

    Curated collection of interesting, creative, or inspiring CSS effects

    CSS-Inspiration is a living gallery of modern CSS effects and components that highlights what’s possible with pure CSS and minimal markup. The collection ranges from micro-interactions and loaders to 3D transforms, complex backgrounds, hover states, and text effects, each presented as a small, self-contained demo. Source code is front and center, encouraging developers to study, copy, and tweak snippets for their own projects. Many examples lean on contemporary features—custom properties, filters, blend modes, gradients, and keyframes—serving as both inspiration and a practical cookbook. ...
    Downloads: 0 This Week
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  • 24
    JSON implementation for Ruby

    JSON implementation for Ruby

    JSON implementation for Ruby

    This is an implementation of the JSON specification according to RFC 4627. You can think of it as a low-fat alternative to XML if you want to store data on disk or transmit it over a network rather than use a verbose markup language. Both variants of the JSON generator generate UTF-8 character sequences by default. If an:ascii_only option with a true value is given, they escape all non-ASCII and control characters with \uXXXX escape sequences, and support UTF-16 surrogate pairs in order to be able to generate the whole range of Unicode code points. ...
    Downloads: 0 This Week
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  • 25
    HASS Configurator

    HASS Configurator

    Configuration UI for Home Assistant

    The HASS Configurator is a small web app (you access it via a web browser) that provides a filesystem browser and text-editor to modify files on the machine the configurator is running on. It has been created to allow easy configuration of Home Assistant. It is powered by Ace editor, which supports syntax highlighting for various code/markup languages. YAML files (the default language for Home Assistant configuration files) will be automatically checked for syntax errors while editing. The configurator fetches JavaScript libraries, CSS and fonts from CDNs. Hence it does NOT work when your client device is offline. And it is only available for Python 3.
    Downloads: 0 This Week
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