
Sky Live HTTP Headers
WebSniffer
HTTP-Repeater (HTTP/s Live Headers) (Beta)
HTTP Header Analyzer
HTTP-TRACKER
HTTP Header Spy
HeaderFlex.app
Modify Header Value (HTTP Headers) is a browser extension that allows you to add, modify or remove a header for any request to your preferred domains.

Postman
Proxyman.io
ngrok
Hoppscotch
HTTP Toolkit
Fiddler
Charles Proxy
A Powerful API Mocking and Testing Tool
Which is more popular?
Based on our record, Requestly should be more popular than Modify Header Value (HTTP Headers). It has been mentioned 35 times since March 2021.
Website, pricing, platforms and company facts side by side.
|
|
|
|
|---|---|---|
| Website | mybrowseraddon.com | requestly.com |
| Pricing | — | |
| Platforms | — | |
| Company | — | Startup from the United States · 20 - 49 employees · 2021 |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of Modify Header Value (HTTP Headers) yet.
Requestly is a modern and powerful companion for API Development and Testing. It is an open-source tool purpose-built to speed up and simplify API development workflow for developers and QAs. It is a combination of API Client and HTTP Interceptor that helps create and share API Contracts, testing...
What each product offers, as listed by its team.


Possible disadvantages
An editorial look at what each product does well and who it suits.


No analysis of Modify Header Value (HTTP Headers) yet.
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
No Modify Header Value (HTTP Headers) videos yet. You could help us improve this page by suggesting one.
Get Started with Requestly
More videos
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing Modify Header Value (HTTP Headers) and Requestly.
Requestly's answer:
Requestly's answer:
Front-end developers, QAs, PMs, Digital Marketers
Requestly's answer:
Requestly is an open-source API development and testing tool that combines the capabilities of an API Client and HTTP Interceptor, making it a better alternative to Postman + Charles Proxy. It simplifies API mocking, request modification, and debugging with an intuitive no-code interface, enabling developers and QAs to test APIs efficiently.
Share your experience with using Modify Header Value (HTTP Headers) and Requestly. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


We have no reviews of Modify Header Value (HTTP Headers) yet. Be the first one to post
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...
Recommendations tracked on public social media and blogs since March 2021.


Yep that started recently. I found a solution with the add-on Modify Header Value (HTTP Headers) , you need to add two rules:. Source: over 3 years ago
Going off of what a user said in the comments of another post complaining about this, you can get the old behaviour back by modifying the request headings. I've managed to do this using a Chrome extensions called Modify Header Value... Source: over 3 years ago
To change user agent on fenix (nighlty ,using custom collection )I use https://mybrowseraddon.com/modify-header-value.html It can also modify other header parameters . Source: over 4 years ago
If you want to try a local-first workflow, you can start using Requestly here: https://requestly.com. - Source: dev.to / 11 months ago
That’s where automation changes the game. By pairing Cursor, an AI-powered coding assistant, with Requestly's local-first API testing and mocking platform, you can offload the grunt work of writing tests to AI while keeping execution... - Source: dev.to / 11 months ago
Requestly is a versatile browser extension and web client used to intercept, mock, and debug APIs in real-time—perfect for frontend developers. - Source: dev.to / over 1 year ago
When comparing Modify Header Value (HTTP Headers) and Requestly, you can also consider the following products.

Sky Live HTTP Headers is an open-source browser extension that visually displays HTTP requests and response headers from every website you visit.
Compare Sky Live HTTP Headers to Modify Header Value (HTTP Headers) or Requestly:

The Collaboration Platform for API Development
Compare Postman to Modify Header Value (HTTP Headers) or Requestly:

WebSniffer is an online tool to outlook HTTP request and response headers.
Compare WebSniffer to Modify Header Value (HTTP Headers) or Requestly:

Proxyman is a high-performance macOS app, which enables developers to view HTTP/HTTPS requests from apps and domains.
Compare Proxyman.io to Modify Header Value (HTTP Headers) or Requestly:

HTTP-Repeater (HTTP/s Live Headers) (Beta) is a browser extension that lets you capture browser requests and repeat the process in a loop automatically.
Compare HTTP-Repeater (HTTP/s Live Headers) (Beta) to Modify Header Value (HTTP Headers) or Requestly:

ngrok enables secure introspectable tunnels to localhost webhook development tool and debugging tool.
Compare ngrok to Modify Header Value (HTTP Headers) or Requestly: