Vanilla JS is a lightweight, cross-platform JavaScript library that makes writing JavaScript code simple and efficient. It's free, open source and has an extensive community of developers supporting it. With Vanilla JS, you can create dynamic, interactive web apps and websites without the need for extra libraries or frameworks. It helps developers create powerful applications in a fraction of the time compared to other libraries. It's a great choice for projects that require a lot of customization and flexibility. Plus, it's a pleasure to work with, since it's lightweight and easy to learn. If you're looking for a great way to get started with JavaScript, Vanilla JS is the perfect choice.