Apologies for any redundancy in my previous responses. To provide you with fresh and valuable information, here are some additional web application frameworks, each highlighted with their major features:

1. Backbone.js

Backbone.js is a lightweight JavaScript library that adds structure to web applications by providing models with key-value binding and custom events.

Major Features:

• Models with Binding and Events: Simplifies data handling by providing models that can bind to data and emit events when changes occur.
• Views with Declarative Event Handling: Facilitates the creation of views that can declaratively handle user actions.
• Router for URL Management: Enables the creation of client-side web applications with clean and bookmarkable URLs.

2. Ember.js

Ember.js is a JavaScript framework that enables developers to create scalable single-page web applications by incorporating best practices into the framework.

Major Features:

• Convention over Configuration: Encourages developers to follow best practices, reducing the amount of code needed.
• Handlebars Templating: Uses the Handlebars templating engine for writing dynamic HTML.
• Robust Routing: Provides a powerful router for managing application state and URLs.

3. Meteor

Meteor is a full-stack JavaScript platform for building web and mobile applications in pure JavaScript.

Major Features:

• Full-Stack Reactivity: Ensures that data changes are reflected in the UI in real-time.
• Isomorphic JavaScript Code: Allows the same code to run on both the client and server sides.
• Built-in Package Manager: Simplifies the inclusion of various functionalities through an integrated package manager.

4. Svelte

Svelte is a modern JavaScript framework that shifts the work of building the application to compile time, resulting in highly efficient code.

Major Features:

• No Virtual DOM: Compiles components to highly efficient imperative code that directly manipulates the DOM.
• Truly Reactive: Offers a straightforward reactivity model without complex state management libraries.
• Small Bundle Sizes: Produces minimal and optimized JavaScript code, leading to faster load times.

5. Nuxt.js

Nuxt.js is a framework built on top of Vue.js that simplifies the development of universal or single-page Vue applications.

Major Features:

• Automatic Code Splitting: Optimizes application performance by splitting code automatically.
• Server-Side Rendering: Provides out-of-the-box support for server-side rendering, enhancing SEO and performance.
• Modular Architecture: Offers a modular approach, allowing developers to choose from a variety of modules to include in their projects.

6. ASP.NET Core

ASP.NET Core is a cross-platform, high-performance framework for building modern, cloud-based, internet-connected applications.

Major Features:

• Cross-Platform: Runs on Windows, macOS, and Linux.
• Unified MVC and Web API Frameworks: Merges MVC and Web API into a single framework, simplifying development.
• Dependency Injection: Built-in support for dependency injection, promoting modularity and testability.

7. Spring Boot

Spring Boot is an extension of the Spring framework that simplifies the initial setup and development of new Spring applications.

Major Features:

• Auto-Configuration: Automatically configures your application based on the dependencies you have added.
• Embedded Servers: Comes with embedded servers like Tomcat and Jetty, eliminating the need for WAR files.
• Production-Ready Features: Includes metrics, health checks, and externalized configuration to help you get your application ready for production.

8. Flask

Flask is a micro web framework written in Python, known for its simplicity and flexibility.

Major Features:

• Lightweight: Minimalistic design with a small core and easy-to-extend philosophy.
• Built-in Development Server: Provides a built-in server for development and debugging.
• Jinja2 Templating: Uses Jinja2 templating engine for rendering HTML.

9. CodeIgniter

CodeIgniter is a powerful PHP framework with a very small footprint, designed for developers who need a simple and elegant toolkit.

Major Features:

• MVC Architecture: Encourages the use of the Model-View-Controller architectural pattern.
• Form and Data Validation: Provides a comprehensive form validation library.
• Security and XSS Filtering: Offers built-in protection against CSRF and XSS attacks.

10. Yii Framework

Yii is a high-performance PHP framework best for developing web applications rapidly.

Major Features:

• MVC Pattern: Implements the Model-View-Controller design pattern.
• Form Input and Validation: Simplifies form handling and validation.
• Authentication and Authorization: Provides simple and extensible authentication and role-based access control.

11. Pyramid

Pyramid is a small, fast, down-to-earth Python web framework.

Major Features:

• Flexibility: Suitable for both small and large applications.
• URL Generation: Provides a powerful URL generation mechanism.
• Extensible Configuration: Uses a flexible configuration system for extending applications.

12. FastAPI

FastAPI is a modern, fast (high-performance), web framework for building APIs with Python 3.6+.

Major Features:

• High Performance: As fast as Node.js and Go.
• Automatic Interactive Documentation: Generates interactive API documentation with Swagger UI and ReDoc.
• Data Validation: Utilizes Pydantic for data validation and serialization.

13. Koa.js

Koa.js is a new web framework designed by the team behind Express.js, aiming to be a smaller, more expressive, and robust foundation for web applications and APIs.

Major Features:

• Modern ES6 Features: Leverages generators, async/await for better asynchronous flow.
• Middleware Stacking: Uses a stack-like method for handling middleware, allowing you to perform actions downstream then filter and manipulate the response upstream.
• Lightweight: Does not bundle any middleware within its core, providing a minimalistic approach.

14. NestJS

NestJS is a progressive Node.js framework for building efficient and scalable server-side applications.

Major Features:

• Modular Architecture: Encourages the use of modules to organize code.
• TypeScript Support: Built with and fully supports TypeScript.
• Dependency Injection: Provides a robust dependency injection system.

15. Phoenix Framework

Phoenix is a web development framework written in Elixir which implements the server-side MVC pattern.

Major Features:

• Real-Time Communication: Built-in support for WebSockets and channels.
• Fault-Tolerance: Leverages Erlang’s VM for building fault-tolerant systems.
• Scalability: Designed to handle massive amounts of traffic efficiently.

16. Grails

Grails is a powerful Groovy-based web application framework for the Java platform.

Major Features:

• Convention over Configuration: Simplifies development by following conventions.
• Groovy-Based: Leverages the Groovy language for a more expressive syntax.
• Seamless GORM Integration: Provides an easy-to-use Object-Relational Mapping (ORM) layer.

17. Play Framework

Play is a web application framework written in Scala and Java, which follows the MVC architectural pattern.

Major Features:

• Asynchronous I/O: Built on Akka Streams, enabling high performance and scalability.
• Hot Code Reloading: Automatically reload

18. Apache Sling

Major Features:

• Content Resolution: Maps request URLs to content nodes in the repository, facilitating RESTful application development.
• Servlet Resolution: Associates content nodes and request methods with appropriate servlets for request handling.
• Flexible Scripting Support: Supports server-side scripting with JavaScript, JSP, Ruby, Velocity, and Scala.
• OSGi-Based Extensibility: Utilizes Apache Felix for modular development and dynamic component loading.

19. Tauri

Major Features:

• Lightweight Applications: Enables the creation of cross-platform desktop and mobile applications with minimal overhead.
• Security Focused: Emphasizes security by allowing developers to enable or disable individual APIs and isolate backend processes.
• Rust-Based Backend: Leverages the performance and safety of Rust for backend development.
• Cross-Platform Support: Compatible with Linux, macOS, Windows, Android, and iOS platforms.

20. Remix

Major Features:

• Full Stack Capabilities: Designed for building web applications with both frontend and backend integration.
• Server-Side Rendering: Supports server-side rendering for improved performance and SEO.
• Seamless Routing: Offers intuitive and nested routing mechanisms.
• React Integration: Works seamlessly with React, enhancing component-based development.

21. Pop PHP Framework

Major Features:

• Modular Components: Provides a collection of components for building web applications, including database abstraction, HTTP handling, and form generation.
• CLI Support: Includes ‘Kettle,’ a command-line tool for scaffolding applications and managing databases.
• RESTful API Development: Features ‘Popcorn,’ a micro-framework layer for quickly building RESTful web services.
• Extensive Documentation: Offers comprehensive guides and documentation for developers.

These frameworks offer diverse features catering to various development needs, from lightweight desktop applications to robust server-side solutions.