Less is another popular CSS preprocessor that provides similar functionality to Sass but with some key differences. Unlike Sass, which uses the SCSS syntax, Less uses a more concise and minimalistic syntax. Here are some key features of Less:

• Variables: Similar to Sass, Less allows you to define variables that can be reused throughout your stylesheets.

@primary-color: #3498db;
@secondary-color: #e74c3c;

• Mixins: Less also supports mixins, which are reusable code snippets that can be included in your stylesheets.

.border-radius(@radius: 5px) {
  border-radius: @radius;
}
.button {
  .border-radius;
}

• Imports: You can easily import other Less files into your main stylesheet using @import.

@import 'variables.less';
@import 'styles.less';

While Sass and Less share many similarities, the choice between the two ultimately comes down to personal preference and project requirements.

So if you're looking for a powerful CSS preprocessor alternative to Sass, give Less a try! With its concise syntax and familiar features, you'll quickly find yourself mastering Less and writing more efficient stylesheets for your projects.

Keep learning and happy coding!