Trailblazer vs webapp2: What are the differences?

What is Trailblazer? A new architecture for Rails. Trailblazer is a thin layer on top of Rails. It gently enforces encapsulation, an intuitive code structure and gives you an object-oriented architecture. In a nutshell: Trailblazer makes you write logicless models that purely act as data objects, don't contain callbacks, nested attributes, validations or domain logic. It removes bulky controllers and strong_parameters by supplying additional layers to hold that code and completely replaces helpers.

What is webapp2? Lightweight Python web framework compatible with Google App Engine’s webapp. webapp2 is a simple. it follows the simplicity of webapp, but improves it in some ways: it adds better URI routing and exception handling, a full featured response object and a more flexible dispatching mechanism.

Trailblazer and webapp2 can be primarily classified as "Frameworks (Full Stack)" tools.

Trailblazer is an open source tool with 2.91K GitHub stars and 129 GitHub forks. Here's a link to Trailblazer's open source repository on GitHub.