
BuildSuperfast
Concrete
DevFast
FastComments
Quickly Plus
Slab
TrimSheetFast
Instantly calculate how much concrete you need for any project. Slabs, footings, columns, post holes. No signup.

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

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 | slabfast.com | github.com |
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In their own words, as submitted to SaaSHub.


Free single-page concrete calculator. Enter your project dimensions and instantly get cubic yards, cubic feet, bag counts for 80lb and 60lb mixes, and an optional cost estimate. Supports four shapes: slab, footing, round column, and post hole. Adjustable waste factor. Saveable shareable URL.
No description of OpenAI Codex CLI yet.
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Why this product is good
Recommended for
Overall verdict
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OpenAI Codex CLI
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Share your experience with using Slab Fast and OpenAI Codex CLI. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.


Tracking Slab Fast since May 2026.
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 / 2 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 / 28 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 2 months ago
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