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.

Nim (programming language)
D (Programming Language)
Go Programming Language
C++
Crystal (programming language)
Zig
Perl
Simple, fast, safe, compiled language for developing maintainable software.

Which is more popular?
Based on our record, V (programming language) seems to be more popular. It has been mentioned 79 times since March 2021.
Website, pricing, platforms and company facts side by side.
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modheader
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| Website | app.modheader.com | vlang.io |
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V Programming Language (Vlang): First Impression - Mike Shah
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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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Recommendations tracked on public social media and blogs since March 2021.

Tracking modheader since Aug 2026.
This seems to be the language's main page https://vlang.io/. - Source: Hacker News / about 1 month ago
How about v-lang? https://vlang.io/ Not python, but, go-like syntax, and satisfies other stuff you mentioned. - Source: Hacker News / 6 months ago
Somewhat similar language, https://vlang.io It’s a mix of go and rust syntax that translates to C. - Source: Hacker News / 7 months ago
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A Powerful API Mocking and Testing Tool
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The Nim programming language is a concise, fast programming language that compiles to C, C++ and JavaScript.
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HTTP proxy / HTTP monitor / Reverse Proxy
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D is a language with C-like syntax and static typing.
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Fiddler is a debugging program for websites.
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Go, also called golang, is a programming language initially developed at Google in 2007 by Robert...
Compare Go Programming Language to modheader or V (programming language):