⚡ Zero Server Latency • 100% Private Memory

In-Browser Developer
Utilities & Sandboxes

50+ fast developer tools, query runners, and visual studios. Everything executes locally inside your browser—no backend tracking, no server uploads, no sign-ups.

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Flagship Tool Interactive AI Code Decomposition

AI Code Explainer & Step-by-Step Walkthrough

Paste complex algorithms, React hooks, Rust memory ownership patterns, or shell scripts. Get animated line-by-line dry runs, mental models, gotcha alerts, and quizzes.

🚀 Launch AI Explainer → Supports Gemini, GPT-4o, Claude (BYOK)

// Example Walkthrough Trace

function findSubarraySum(arr, target) {

const map = new Map([[0, -1]]);

let currSum = 0;

for (let i = 0; i < arr.length; i++) { ... }

}

✓ Visualized dry-run simulation & edge cases

⚡ Live Engines

Interactive Sandboxes & Playgrounds

Full in-browser execution environments with zero backend latency.

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In-Browser SQLite Query Studio

In-memory SQL database with sample schema, query timer, and CSV/JSON export.

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MongoDB & NoSQL Query Studio

Client-side MongoDB find() queries and multi-stage aggregate() pipelines.

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HTML, CSS & JS Live Sandbox

Interactive multi-pane web editor with live preview and simulated console.

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CSS Flexbox & 2D Grid Visualizer

Visual layout builder with property toggles and copyable CSS & Tailwind code.

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REST API & HTTP Request Studio

Test endpoints, headers, query params, benchmark latency, and export cURL.

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CSS Glassmorphism Studio

Design frosted glass UI surfaces and multi-layer elevation shadows.

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🛠️ Essential Utilities

Top DevOps, Code & Security Tools

Instant generators and converters running 100% in your browser.

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Dockerfile Generator

Multi-stage hardened Dockerfiles for Node.js, Python, Go, and Rust.

Linux systemd Generator

Generate production systemd .service unit files with auto-restart.

Nginx Config Generator

Build reverse proxy blocks with SSL, WebSockets, Gzip, and HTTP/2.

JWT Debugger & Inspector

Decode JWT headers, payload claims, and verify HMAC/RSA signatures.

JSON to TypeScript / Zod

Convert raw JSON into TypeScript types, Zod schemas, and Pydantic.

cURL to Multi-Language Code

Convert curl requests to JS Fetch, Axios, Python Requests, and Go.

Linux chmod Permissions

Convert between octal (755, 644) and symbolic (rwxr-xr-x) permissions.

Regex Tester & Builder

Test regular expressions in real time with visual match highlighting.

IPv4 Subnet & CIDR Calculator

Calculate subnet mask, network address, and usable host IP range.