Libretto

The short version: if you're already comfortable with Playwright or Puppeteer and just want scripts that write themselves from a recorded run, Libretto is worth trying — it's free, open source, and the network-level reverse-engineering trick is a genuinely useful cost optimization that competitors don't really offer.

Against Playwright and Puppeteer directly, Libretto isn't a replacement so much as a code generator sitting on top of the same ecosystem — you still get Playwright/TypeScript output, just produced automatically instead of hand-written. Against Selenium, it's simply more modern and less brittle. The real differentiator is the HTTP-reverse-engineering step: turning a browser automation into a direct API call when possible is the kind of optimization that saves real money at scale, and the built-in debug agent that proposes fixes for broken automations is a rare touch for an open-source tool this young. The catch is exactly that youth — it launched publicly around October 2025, so it hasn't had years to prove itself against edge cases the way Playwright has, and public documentation on the network-reverse-engineering and auto-fix agent is still thin. For teams maintaining fragile scraping or portal automations who are willing to be early adopters, it's a low-risk bet since it costs nothing to try.