[Fnoord]

Because Burp Suite is the defacto tool for web pentesting. So that is what people know.

I've never liked Burp. Java, requires GUI, and subscription costing 365 USD/year. Where without a license you cannot even do trivial automated stuff (forcing you to click 'OK' all the time; easily circumvented with e.g. AHK).

At the very least a personal license for Pākiki is only 100 USD/year. Which is a lot less barrier of entry for amateurs (if you're a for-profit web pentester /care). How does Caido and Pākiki compare to mitmproxy?

[Sytten]

We are also at 100USD/y. We both use a client / server architecture. We are both closer to burp suite in terms of functionality (aka focus on finding vulnerabilities, replay (invalid) traffic, mapping sites, etc compared to mitmproxy that is more a developper tool.