Requestly
Charles Proxy
Fiddler
HTTP Toolkit
Header Editor
Proxyman.io
EditThisCookie
Free browser extension to modify HTTP request and response headers. No sign-up. Works on Chrome, Firefox, and Edge.

A service to get your content to your users where they are

Website, pricing, platforms and company facts side by side.
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modheader
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| Website | app.modheader.com | site.renderthis.app |
| Pricing | — | |
| Listed in | — |
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On the pricing front, Requestly strikes a balance between affordability and functionality. It is an open-source tool, offering freemium to individual developers and affordable pricing plans for team collaboration. We...
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Add custom HTTP request headers to any site. Set Authorization tokens, override Content-Type, inject debug headers per URL pattern. declarativeNetRequest. Free: 5 rules, Pro: unlimited.
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Proxyman is a high-performance macOS app, which enables developers to view HTTP/HTTPS requests from apps and domains.
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