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
JavaScript
A production implementation guide to OpenAI async tool calling, covering the Responses API contract, durable job registries, late-result delivery, failure recovery, wait tools, and compatibility limits.
Developer Tools
A current implementation guide to GitHub Copilot content exclusions, including CLI and app support, pattern syntax, policy scope, REST auditing, testing, and documented limitations.
Developer Tools
A practical administrator checklist for GitHub Copilot's September 2026 policy convergence, longer chat retention, Balanced code-review default, and October seat-billing changes.
§ 04 — Guided learning
Verify if images have proper alt text.
Open tool →AI Agents
A production guide to starting GitHub Copilot cloud-agent work from Slack while keeping conversation context, repository permissions, app identity, review rules, and cost controls explicit.