Dev notes from the maintainer of Puppeteer-Sharp. I write about browser automation, .NET, and teaching computers to do the boring parts.

Recent posts

1. Sep 4, 2026 Stream Deck as an Agentic Productivity Tool
2. Aug 14, 2026 The state of unit testing in the AI era
3. Aug 9, 2026 New .NET Library in Town. Let's Welcome ReactiveExtensions-Sharp

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Projects

Puppeteer-Sharp is a C# port of Google’s Puppeteer — a headless Chrome API for .NET. 36M+ NuGet downloads, still shipping. That’s the flagship. Everything else on this site is notes from building it, porting Playwright, and the agents that came after.

• Playwright for .NET Started as Playwright-Sharp. Went to Microsoft and became the official library.
• UI Testing with Puppeteer The book. End-to-end automation with the real browser.
• cronito A small tool for scheduling work with coding agents.

About

I’m Darío Kondratiuk, a software developer from Buenos Aires. 25 years teaching computers how to use the software we write — ORMs, browser automation, now AI agents that author and repair tests at mabl.

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