Here are some of the most popular backend frameworks based on current usage statistics:

1. Express.js: Express.js is a popular and widely-used back-end framework for building web applications with Node.js. It is lightweight and provides a simple and flexible way to build web applications and APIs.
2. Django: Django is a high-level Python web framework that is widely used for building web applications. It is fast, secure, and scalable, and provides a rich set of features for building complex web applications.
3. Ruby on Rails: Ruby on Rails is a full-stack web application framework written in Ruby. It is popular for its convention-over-configuration approach, which makes it easy to build web applications quickly.
4. ASP.NET: ASP.NET is a free, open-source, server-side web application framework designed by Microsoft. It is widely used for building dynamic web applications, and is particularly popular in the enterprise space.
5. Laravel: Laravel is a free, open-source PHP web application framework that is widely used for building web applications. It is known for its expressive syntax and powerful tools for building modern web applications.

It’s worth noting that the popularity of backend frameworks can vary depending on the specific industry or region, and there are many other backend frameworks that are also widely used.

Let’s peek into some more

Sure! Here is a table of some popular backend frameworks with a brief description of each:

Framework	Language	Description
Express.js	JavaScript	Minimal and flexible Node.js web application framework for building web applications and APIs.
Django	Python	High-level Python web framework that encourages rapid development and clean, pragmatic design.
Ruby on Rails	Ruby	Full-stack web application framework that provides a convention-over-configuration approach for building web applications quickly.
ASP.NET	C#	Free, open-source, server-side web application framework designed by Microsoft for building dynamic web applications.
Laravel	PHP	Free, open-source PHP web application framework with expressive syntax and powerful tools for building modern web applications.
Flask	Python	Micro web framework for Python that is easy to use and provides a flexible way to build web applications.
Spring	Java	Open-source application framework for building Java applications. Provides a comprehensive programming and configuration model for modern Java-based applications.
Sinatra	Ruby	Domain-specific language and web framework for building web applications in Ruby with minimal effort.
Phoenix	Elixir	High-performance web framework for building scalable web applications with Elixir.

This is just a small sample of the many backend frameworks that are available. It’s important to choose the framework that best fits your needs and the requirements of your project.