WT (or Wt, pronounced "witty") is a C++ library and application server for developing web applications. It is based on an object-oriented approach and offers an API for creating interactive web applications. Wt provides an abstract interface for web-based widgets, including a rich set of widgets for creating web forms, tables, trees, and more. Wt also provides a server-side implementation of AJAX, allowing for asynchronous communication between the client and the server. Wt is designed to be fast and secure, and is suitable for developing complex web applications that require a high degree of scalability and performance. It supports multiple databases and web servers, and is compatible with multiple web technologies such as HTML, CSS, JavaScript, and JSON. Wt also includes a set of tools for debugging and profiling web applications. Overall, Wt is an excellent choice for developing web applications and software that require a high degree of scalability and performance. It is a comprehensive set of tools that can help developers create powerful, interactive web applications.
One is a framework and the other is a server.
Wt is a framework, Apache is not.