Is there any tool similar to fiddler that can modify the data submitted by post?

Is there a tool similar to fiddler that can modify the data similar to the data submitted by post? we recommend several test tools to share: Is there a tool similar to fiddler that can modify the data submitted by post?
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I have never used it. do you want to modify the submitted data for use?

It is probably a black box test.
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What else do you want to find if you have the software?
You can use php + curl to write a web interface.