HTML

HTML stands for Hyper Text Markup Language, used to create web pages. It is one of the most powerful languages for creating a website and is very simple to learn. The HTML elements are represented by Tags. Those tags are rendered as Page Content on the website.

CSS

CSS stands for Cascading Style Sheet. It will add look and style to the HTML tags, and as a result, the site looks and feels good. We cannot do styling with HTML tags, so we have to use CSS.

Bootstrap 

It's a framework used for designing a website or web page. It contains HTML and CSS-based design templates. If you want to learn more about Bootstrap.

JavaScript

JavaScript is an object-oriented scripting language. It is open-source and cross-platform. Mostly in Web applications, JavaScript is used on Client-Side (DOM). So, whenever the user clicks the submit button, the validation process is done. If the validation is true, it will be submitted to the web server. 

jQuery 

jQuery is a collection of JavaScript library functions. It is also open source, mostly designed to simplify the client-side scripting of HTML. The main purpose of jQuery is to provide an easy way to use JavaScript on websites to make them more interactive and attractive. 

AJAX

Asynchronous JavaScript And XML (AJAX) is a technique for creating better, faster, and more interactive web applications with the help of XML, HTML, CSS, and JavaScript.

Angular 

Nowadays, Angular is also the most preferred skill among many companies for DOT NET Developers. So we should be strongly skilled in Angular as well. Angular is a platform that makes it easy to build applications on the web. Angular combines declarative templates, dependency injection, end-to-end tooling, and integrated best practices to solve development challenges.

C# 

C# is an object-oriented language. In our web application, all the logical operations are carried out in this part. And also, our Database connectivity is done here. The complicated codes are run in C#. 

.NET Core

The booming .NET technology is .NET Core. It is an Open Source general-purpose development platform that is maintained by Microsoft and the .NET Community. Some features of .NET Core, 

• Cross-platform
• Consistent across architectures
• Command-line tools
• Flexible deployment
• Compatible
• Open source
• Supported by Microsoft

Database 

A database is a structured set of data held in a computer. There are many databases, such as MS-SQL Server, MySQL Server, and Oracle. Based on the requirement we have to choose.

Apart from the above-stated technologies, there are some new technologies that are also used for web application development. But you need not be a master of this; you need to know the basics since these are emerging technologies. You can use these based on your application requirements.