Frontend
languages

• HTML (HyperText Markup Language)
• JavaScript (JS)
• CSS (Cascading Style Sheets)
   

frameworks and libraries

• React
• Angular
• Vue.js

Backend
languages

• Python
• JavaScript (Node.js)
• Java
• C# (.NET)
• PHP
• Ruby (with Ruby on Rails)
• Go (Golang)
• SQL (Structured Query Language)

In Summary
Frontend
Primarily HTML, CSS, and JavaScript (often with frameworks/libraries). Deals with the user interface and user interaction.

Backend
A broader range of languages like Python, JavaScript (Node.js), Java, C#, PHP, Ruby, Go, and SQL. Handles data, logic, and server-side operations.