I built this tool because I had a lot of production issues where I needed to make some changes and test them. I couldn't use devtools' Elements or Sources panel since I had to make this changes available as the page loads (inline script changes, css url changes, etc...).
I tried using Fiddler and similar alternatives (Charles, Burp), but:
1. When running it on the Mac you need to run a VM.
2. Fiddler shows you ALL the requests made by you're machine.
3. Moving between Fiddler, Chrome and Sublime is just annoying.
Since it's running a proxy server (it's actually based on http://www.mitmproxy.org) on your machine, it's also very useful when you want to test things on mobile devices.
Since Fiddler is just a proxy listening on port 8888, you can use some proxy profile extension like SwitchySharp in Chrome to control it, make only necessary urls access through fiddler.
Currently you cannot chain proxies to Tamper. I will add this to my to do list.
If this helps, know that Tamper sets Chrome proxy settings to go through its proxy using a PAC file. You can modify that PAC file by clicking the little cog icon in Tamper.
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[ 4.2 ms ] story [ 27.6 ms ] threadI tried using Fiddler and similar alternatives (Charles, Burp), but:
1. When running it on the Mac you need to run a VM.
2. Fiddler shows you ALL the requests made by you're machine.
3. Moving between Fiddler, Chrome and Sublime is just annoying.
Since it's running a proxy server (it's actually based on http://www.mitmproxy.org) on your machine, it's also very useful when you want to test things on mobile devices.
[1]: https://addons.mozilla.org/en-US/firefox/addon/tamper-data/
If this helps, know that Tamper sets Chrome proxy settings to go through its proxy using a PAC file. You can modify that PAC file by clicking the little cog icon in Tamper.
Also these instructions don't work straight away on linuxmint 14. I suspect some missing deps or incompatible versions or something.
Just FYI.
I'm sure the tool is awesome though! =)