It has all the same core functionality, plus:
- It's open-source
- It's cross-platform
- It can do all the interception setup for you, for a single specific target. Fiddler et al set the system proxy, so there's a lot of other traffic going on, and you then need to make applications trust the certificate manually too. Notably some apps (like Node) ignore the system proxy settings entirely, which means you need code changes. HTTP Toolkit does some clever injection, and skips all of that.
- Nice & modern UI
- Built in docs for all standard HTTP status codes/headers/methods/etc
- The Pro features: validation & inline docs from 1400+ API specifications, testing & comparison of compression options, explanations for how your response will be cached & why (and warnings).
I keep meaning to do a proper comparison page (any day now), but that's the gist.
- It's open-source
- It's cross-platform
- It can do all the interception setup for you, for a single specific target. Fiddler et al set the system proxy, so there's a lot of other traffic going on, and you then need to make applications trust the certificate manually too. Notably some apps (like Node) ignore the system proxy settings entirely, which means you need code changes. HTTP Toolkit does some clever injection, and skips all of that.
- Nice & modern UI
- Built in docs for all standard HTTP status codes/headers/methods/etc
- The Pro features: validation & inline docs from 1400+ API specifications, testing & comparison of compression options, explanations for how your response will be cached & why (and warnings).
I keep meaning to do a proper comparison page (any day now), but that's the gist.