
Claude Code
aider
Cursor
Ghostty
opencode
GitHub Copilot
Zed
Frontier reasoning in the terminal

Mockaroo
JSON Generator
MockTurtle.net
ExtendsClass's JSON generator allows to generate random JSON data from a template.

Which is more popular?
Based on our record, OpenAI Codex CLI seems to be more popular. It has been mentioned 41 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | github.com | extendsclass.com |
| Pricing | — | |
| Company | — | 2019 |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of OpenAI Codex CLI yet.
This free online tool allows to generate JSON dataset. You can generate multiple JSON files exported to a zip archive. No limits. No registration.
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OpenAI Codex CLI
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Share your experience with using OpenAI Codex CLI and ExtendsClass JSON Generator. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.


Codex takes the opposite bet: one product across six surfaces. CLI, IDE extension, Codex Cloud, the ChatGPT app sidebar, mobile (GA May 2026), and a Chrome extension. All of them share your ChatGPT account, your session history, and your... - Source: dev.to / 8 days ago
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 / about 1 month 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 2 months ago
Tracking ExtendsClass JSON Generator since Mar 2021.
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