
The AI coding agent for building ambitious software
The AI coding agent for building ambitious software
Marble - LeetCode Tutor records 0 monthly visits with — month-over-month growth and Free pricing. Refact.ai records 40,171 monthly visits with -20.8% growth and Freemium pricing.
| Dimension / Metric | ![]() | ![]() |
|---|---|---|
| Official Domain | chromewebstore.google.com | refact.ai |
| Pricing Model | Free | Freemium |
| Monthly Visits | 0 (0) | 40.17K (40,171) |
| MoM Traffic Delta | 0 (—) | -10.53K (-20.8%) |
| Primary Market & Share | 🌐 Global (—) | 🇺🇸 United States (18.4%) |
| Direct Visits / mo | 0 | 5.72K |
| User Rating | 4.2 | 4.4 |
| Supported Platforms | Browser Extension | Website |

An AI tutor that walks you through LeetCode problems instead of solving them for you
Open any LeetCode problem and Marble follows a structured three-stage routine: understand the problem, build a plan, then implement it. The flow mirrors what interviewers expect to hear in a technical screen.
Help is generated in the language of your choice, so you can keep solving in Python, Java, C++, JavaScript, Go, or whichever stack you interview in.
Marble coaches rather than solves, nudging you toward the right data structure or edge case instead of pasting a finished solution, which reinforces pattern recognition over time.
Activate the tutor from a small pin button directly on the LeetCode problem page, with no separate dashboard or tab juggling.

Open-source, self-hosted AI coding agent that codes like you
A task-driven agent that plans work, searches your repository for context and executes changes step by step, connecting to GitHub, databases and CI/CD.
In-IDE chat for asking, editing, debugging and generating code in natural language, plus fast multi-line autocompletion powered by RAG over your project.
Deploy on-premise or run the open-source version to keep your code private and fully under your own control.
Pick from leading LLMs or bring your own API key, and fine-tune the agent on your company's coding style and stack.

The AI coding agent for building ambitious software
The AI coding agent for building ambitious software
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