Open Source Web Development Projects
Discover 119 open source Web Development repositories from GitHub, each with an analysis of what it does, key features, use cases and alternatives. Web Development projects here are most often combined with Library, TypeScript and Python. Last updated October 4, 2026.
119 repositories · updated October 4, 2026
no-as-a-service: Return Random Rejection Reasons via an API
No-as-a-Service is a small JavaScript API that returns a random rejection reason as JSON. Use the hosted endpoint for playful “no” responses in apps and bots, or self-host it with Node.js and Express.
remote-dom: Synchronize Sandboxed UI with a Host Page
Remote DOM mirrors a UI tree created in a sandboxed JavaScript environment into a host page. It suits teams that need to isolate remote code while limiting which elements and interactions that code can expose.
linkwarden: Save, Organize, and Preserve Web Links
Linkwarden is a self-hosted bookmark manager for saving and organizing links, with archived copies of webpages for later access. It suits individuals and teams who want searchable collections, reading and annotation tools, and control over where their bookmarks are hosted.
hugo: Build Fast Static Websites
Hugo is a Go-based static site generator for building and previewing websites from files and templates. It suits teams and individuals who want flexible content publishing, multilingual sites, and built-in asset processing without a dynamic application server.
mantine: Build React Interfaces with Components and Hooks
Mantine is a TypeScript React library for building user interfaces, with reusable components, hooks, and supporting packages for forms, charts, notifications, and more. It suits teams that want a broad UI toolkit rather than assembling every interface primitive themselves.
theatre: Create and Edit Motion Graphics for the Web
Theatre.js is a TypeScript animation library with visual tools for creating detailed motion graphics on the web. Use it to animate 3D scenes, HTML and SVG, or other JavaScript values, either programmatically or through its editor.
ladder: Proxy Web Requests and Modify Responses
Ladder is a self-hosted HTTP proxy for testing how websites deliver content to different clients. It can modify headers, URLs, and HTML, helping developers and researchers inspect paywall and access-control behavior for legitimate testing.
three.js: Build Interactive 3D Experiences for the Web
three.js is a JavaScript library for creating and displaying 3D graphics in browsers. Use it to build interactive scenes with WebGL or WebGPU, without implementing a rendering engine from scratch.
wallabag: Save Web Pages for Later Reading
wallabag is a self-hostable web application for saving, classifying, and reading articles later. It extracts page content to provide a less cluttered reading experience, with companion apps and a browser extension available.
uchu: Use an OKLCH Color Palette in CSS Projects
uch? is a CSS color palette built around the OKLCH color space, with expanded and reduced sets of colors. It suits web developers who want a ready-made palette and are comfortable using OKLCH rather than conventional color spaces.
html5-boilerplate: Start Fast, Adaptable Websites
HTML5 Boilerplate is a framework-independent front-end starter for building fast, adaptable websites and web apps. It provides a considered HTML, CSS, and project setup for developers who want a practical baseline without adopting a particular framework.
awesome-fastapi: Find FastAPI Libraries, Guides, and Projects
A curated directory of FastAPI extensions, learning resources, hosting options, starter templates, and example applications. Useful for developers building APIs with FastAPI who want to discover tools and implementation references.