Using Ruby to build applications Ruby is mainly used to build web applications and is useful for other programming projects. It is widely used for building servers and data processing, web scraping, and crawling. The leading framework used to run Ruby is Ruby on Rails, although that's not the only one.

Ruby is a dynamic, open-source programming language with a focus on simplicity and productivity. You need Ruby if you prioritize "developer happiness" and elegant, readable code that feels natural to write. Its most famous framework, Ruby on Rails, is a powerhouse for web development, used by giants like Shopify, Airbnb, and GitHub to build robust applications rapidly. Ruby uses a "Convention over Configuration" approach, which means it makes smart assumptions about what you want to do, allowing you to build complex features with significantly less code than other languages. It is also excellent for automation scripts, data processing, and prototyping. Because the syntax is so close to the English language, it reduces the cognitive load on the programmer, making it an ideal choice for both beginners who want to see quick results and experienced engineers who want to maintain clean, manageable codebases in a collaborative environment.