Open Source Web Development Frameworks

Blazor lets you build interactive web UIs using C# instead of JavaScript. Blazor apps are composed of reusable web UI components implemented using C#, HTML, and CSS. Both client and server code is written in C#, allowing you to share code and libraries. Blazor is a feature of ASP.NET, the popular web development framework that extends the .NET developer platform with tools and libraries for building web apps. Blazor can run your client-side C# code directly in the browser, using WebAssembly. Because it's real .NET running on WebAssembly, you can re-use code and libraries from server-side parts of your application. Alternatively, Blazor can run your client logic on the server. Client UI events are sent back to the server using SignalR - a real-time messaging framework. Once execution completes, the required UI changes are sent to the client and merged into the DOM. Blazor uses open web standards without plug-ins or code transpilation.

Feathers is a lightweight web-framework for creating real-time applications and REST APIs using JavaScript or TypeScript. Feathers can interact with any backend technology, supports over a dozen databases and works with any frontend technology like React, VueJS, Angular, React Native, Android or iOS. Build prototypes in minutes and production-ready apps in days. Using the latest language features, Feathers is a small library that provides the structure to create complex applications but is flexible enough to not be in the way. Feathers is a “batteries included but easily swappable framework” with a large ecosystem of plugins. Include exactly what you need. No more, no less. Feathers has adapters for 12+ databases out of the box. You can have multiple databases in a single app and swap them out painlessly due to a consistent query interface. Feathers can be used the same way on the server with Node.js and in the browser with frameworks like React, Angular, VueJS or on mobile with React.

Open source documentation site generator that runs as a Vite plugin in your own codebase. Holocron builds delightful docs websites from MDX pages and a docs.json config: sidebar navigation, Orama search, dark mode, OpenAPI reference, and AI exports. You host the build on Vercel, Cloudflare Workers, Node, or holocron.so. Docs maintenance runs in GitHub Actions: agents update pages when source files change, instead of a closed hosted product. Use it to keep docs next to the code, to give agents raw markdown, or to leave a hosted docs platform without a rewrite. Same docs.json and MDX also work as a Mintlify drop-in. Install with npx -y @holocron.so/cli create. Docs at holocron.so.

Java Web Application Framework. Write good-looking, styled, hacker-proof, well-behaving, customizable, content-rich Java web applications easy in a minimum time using designers & framework services.

Easily associate DOM elements with model data using a concise, readable syntax. When your data model's state changes, your UI updates automatically. Implicitly set up chains of relationships between model data, to transform and combine it. Quickly generate sophisticated, nested UIs as a function of your model data. Get started with knockout.js quickly, learning to build single-page applications, custom bindings and more with interactive tutorials. Knockout is a JavaScript MVVM (a modern variant of MVC) library that makes it easier to create rich, desktop-like user interfaces with JavaScript and HTML. It uses observers to make your UI automatically stay in sync with an underlying data model, along with a powerful and extensible set of declarative bindings to enable productive development. For Node.js developers, Knockout is also available from npm.

Next is a Java Web framework, based on Spring and Hibernate, it aims the fast development and high productivity. It was born from the older brother Neo Framework. Features several utilities that makes web development easier.

OpenSeeds is an open-source web-development framework and object model designed for the LAMP environment. It is designed with complex systems in mind. The framework itself is light-weight. The object model is simplistic.

PHP Reusable Web Framework (rwfPHP) is a set of Object Oriented classes that allow development of Object Oriented Event driven web applications. Speed development through the use PHP web controls and use of templates.

Not just another PHP MVC framework.