
Claude Code
Cursor
aider
Zed
Ghostty
warp by spolu
GitHub Copilot
Frontier reasoning in the terminal

Postman
Proxyman.io
Hoppscotch
ngrok
HTTP Toolkit
Fiddler
Warp
A Powerful API Mocking and Testing Tool
Which is more popular?
OpenAI Codex CLI might be a bit more popular than Requestly. We know about 40 links to it since March 2021 and only 35 links to Requestly.
Website, pricing, platforms and company facts side by side.
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| Website | github.com | requestly.com |
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| Company | — | Startup from the United States · 20 - 49 employees · 2021 |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of OpenAI Codex CLI 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.


Overall verdict
Why this product is good
Recommended for
Overall verdict
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Recommended for
Walkthroughs and reviews on video.
OpenAI Codex CLI
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How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing OpenAI Codex CLI 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 OpenAI Codex CLI 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 OpenAI Codex CLI 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.


The second CLI (Codex) records tokens and quota in session files, but the laptop sleeps and moves, so Prometheus can't reliably scrape it. That's exactly the Pushgateway case: a systemd user timer parses the session files every 5 minutes... - Source: dev.to / 14 days ago
Since when? https://learn.chatgpt.com/docs/codex/cli https://github.com/openai/codex Looks like it's still a more-or-less-open-source product called Codex CLI. FWIW, there have been issues with various versions of ChatGPT not knowing... - Source: Hacker News / about 1 month ago
Codex is open source: https://github.com/openai/codex. - Source: Hacker News / about 2 months ago
If you want to try a local-first workflow, you can start using Requestly here: https://requestly.com. - Source: dev.to / 10 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 / 10 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 OpenAI Codex CLI and Requestly, you can also consider the following products.

Transform hours of debugging into seconds with a single command. Experience coding at thought-speed with Claude's AI that understands your entire codebase—no more context switching, just breakthrough results.
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The Collaboration Platform for API Development
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The AI-first Code Editor. Build software faster in an editor designed for pair-programming with AI.
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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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Open source API development ecosystem
Compare Hoppscotch to OpenAI Codex CLI or Requestly: