Sass vs Stylus: What are the differences?

# Introduction

Sass and Stylus are popular preprocessor scripting languages that extend the capabilities of CSS. While they both serve the same purpose, there are key differences between the two that developers should be aware of. 

1. **Syntax**: Sass follows a strict indentation-based syntax similar to Python, while Stylus uses a concise and minimalistic syntax with fewer symbols and punctuation.
2. **Language features**: Sass offers a wider range of language features such as loops, conditionals, and mixins, making it more versatile but also more complex for beginners. Stylus, on the other hand, emphasizes brevity and simplicity, which can lead to more concise code.
3. **Installation**: Sass requires Ruby to be installed on the system as it is written in Ruby, whereas Stylus is written in Node.js and can be installed using npm, making it easier to set up for Node.js developers.
4. **Community and Support**: Sass has a larger and more established community with extensive documentation and support, making it easier to find resources and solutions to common problems. Stylus, while recognized for its efficiency, has a smaller user base and may have limited resources available.
5. **Vendor Prefixing**: Sass does not have built-in support for vendor prefixing, requiring the use of additional tools or plugins, whereas Stylus includes automatic vendor prefixing functionality, simplifying the process of ensuring cross-browser compatibility.
6. **File Extensions**: Sass traditionally uses the .sass file extension for its syntax, while Stylus uses the .styl extension, allowing developers to easily distinguish between the two languages based on the file type.

In Summary, Sass and Stylus differ in syntax, language features, installation process, community support, vendor prefixing capabilities, and file extensions.