Lightpanda

A headless browser built from scratch in Zig, optimised for AI agents and automation with 9x less memory and 11x faster execution than Chrome.

Open source alternative to:

Playwright

Puppeteer

Lightpanda is a purpose-built headless browser designed specifically for AI agents, web scraping, and browser automation. Unlike Chromium forks or WebKit patches, it is written from scratch in Zig, allowing it to achieve dramatically lower memory usage and faster execution times — the project claims 9x lower memory consumption and 11x faster execution compared to Chrome.

The browser supports the Chrome DevTools Protocol (CDP), making it a drop-in replacement for Chrome in existing Playwright, Puppeteer, and chromedp workflows. It includes an HTTP loader powered by libcurl, an HTML parser, a full DOM tree with JavaScript execution via V8, Ajax support through XHR and Fetch APIs, and network interception capabilities.

Lightpanda is well-suited for developers building AI agents that browse the web, automated testing pipelines, and large-scale scraping workloads where resource efficiency is critical. The project is currently in beta.

Categories:

Automation Tools Developer Tools

Similar open source alternatives

Flowise

Flowise is an open-source, visual, low-code/no-code tool designed to help users build AI agents and sophisticated LLM-powered workflows through a drag-and-drop interface. It features a Node.js backend and a React frontend, along with modular components for integrations and API documentation—making it accessible to both developers and non-technical users.

Alternative to: