100% private · no tracking · works offline100% client-side/no data leaves your browser/no accounts/works offline
Every tool runs 100% in your browser — zero servers, zero tracking. Plus practical articles & tutorials for modern developers.
Search 85+ tools · works offline after first load
§ 01 — Why developers trust it
Every tool executes locally. Nothing is uploaded — your code never leaves the tab.
No analytics on your inputs, no accounts, no cookies you didn’t ask for.
Load once and keep working on a plane. All 85+ tools, no paywall.
§ 02 — Toolchain index
A taste of the kit — all 85+ tools run in your browser.
§ 03 — Latest writing
LLM
GitHub Models shuts down for good on July 30, 2026 — this guide walks through finding every place your code depends on it and migrating to Azure AI Foundry, OpenRouter, a direct provider API, or a local model, with working code.
JavaScript
A production guide to Programmatic Tool Calling in the OpenAI Responses API, including tool eligibility, structured contracts, nested-call continuation, routing boundaries, and operational safeguards.
JavaScript
A production-minded LiteRT.js guide for running compatible AI models locally in the browser, from conversion and WebGPU execution to fallbacks, memory cleanup, caching, and testing.
Developer Tools
§ 04 — Guided learning
Verify if images have proper alt text.
Open tool →A step-by-step walkthrough of installing ZCode, configuring Z.ai's open-weight GLM-5.2 model, running Goal Mode and MCP, and calling the API directly — plus how it stacks up against Claude Code, Cursor, and GitHub Copilot.