CodinGame
HackerRank
Codewars
LeetCode
CodeSignal
Codility
Exercism
CheckIO
OpenAI Codex CLI
Claude Code
Cursor
Ghostty
warp by spolu
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CodinGame
OpenAI Codex CLICodinGame might be a bit more popular than OpenAI Codex CLI. We know about 45 links to it since March 2021 and only 39 links to OpenAI Codex CLI. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
Are you sure, I got a link to a codingame.com assessment from block. Source: about 3 years ago
This, and OP should practice handling the stress. Find a friend to do interviews with, or give yourself a timer, or whatever. codingame.com is a good alternative if you want to try dealing with a timer and don't want to be able to cheat. Source: about 3 years ago
Just jumped to codingame.com and start (cant) solving puzzles. Source: over 3 years ago
Personally, I like codingame.com (completely free unless you are an employer) - Their simple puzzles are great places to get an idea of how programming works and the kinds of problems they solve. I think the first puzzle I was able to solve as a beginner in a few days. Source: over 3 years ago
I believe it's possible to use rust in codingame.com. Is that ok for you? Source: over 3 years 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 what Codex is -- at least in the (IIRC) GPT-5.3 timeframe, there were serious issues with the knowledge cutoff. - Source: Hacker News / 8 days ago
Codex is open source: https://github.com/openai/codex. - Source: Hacker News / 25 days ago
One of the first things I asked Pi was whether it could show my OpenAI usage limits in its status line. It replied that it should be possible with the Codex CLI. - Source: dev.to / about 1 month ago
>kimi has been particularly shameless in copying codex 1:1, wow. Isnยดt codex MIT https://github.com/openai/codex ? - Source: Hacker News / about 1 month ago
> a huge value is the [โฆ] Codex harness Codex. There are open source implementations Like Codex https://github.com/openai/codex. - Source: Hacker News / about 1 month ago
HackerRank - HackerRank is a platform that allows companies to conduct interviews remotely to hire developers and for technical assessment purposes.
Claude Code - Transform hours of debugging into seconds with a single command. Experience coding at thought-speed with Claude's AI that understands your entire codebaseโno more context switching, just breakthrough results.
Codewars - Achieve code mastery through challenge.
Cursor - The AI-first Code Editor. Build software faster in an editor designed for pair-programming with AI.
LeetCode - Practice and level up your development skills and prepare for technical interviews.
Ghostty - A fast, feature-rich, and cross-platform terminal emulator