Charles vs Fiddler: What are the differences?
What is Charles? HTTP proxy / HTTP monitor / Reverse Proxy. Charles is a web proxy (HTTP Proxy / HTTP Monitor) that runs on your own computer. Your web browser (or any other Internet application) is then configured to access the Internet through Charles, and Charles is then able to record and display for you all of the data that is sent and received.
What is Fiddler? *A free web debugging tool *. It is a free web debugging proxy for any browser, system or platform. It helps you debug web applications by capturing network traffic between the Internet and test computers. The tool enables you to inspect incoming and outgoing data to monitor and modify requests and responses before the browser receives them.
Charles and Fiddler can be categorized as "API" tools.
According to the StackShare community, Charles has a broader approval, being mentioned in 16 company stacks & 13 developers stacks; compared to Fiddler, which is listed in 4 company stacks and 4 developer stacks.