nodrivervspydoll
nodriver is a Python library for browser automation that communicates directly with the browser via the Chrome DevTools Protocol (CDP), without relying on Selenium or chromedriver. It is the successor to undetected-chromedriver, created by the same author, and is designed from the ground up to be undetectable by anti-bot systems.
Key advantages over traditional browser automation:
- No chromedriver dependency Communicates directly with Chrome/Chromium via CDP websocket, eliminating the most common detection vector (chromedriver fingerprint).
- Undetectable by default
Does not set the
navigator.webdriverflag, does not inject automation-related JavaScript, and avoids CDP detection patterns that anti-bot systems look for. - Fast and lightweight Without the Selenium/WebDriver protocol overhead, nodriver is significantly faster at launching browsers and executing commands.
- Async-first Built entirely on Python's asyncio, enabling efficient concurrent browser automation.
- Simple API Clean, Pythonic API that is easier to use than raw CDP or Selenium.
nodriver is particularly useful for scraping websites protected by advanced anti-bot systems like Cloudflare, DataDome, or PerimeterX, where standard Selenium or Playwright setups get detected and blocked.
Pydoll is a Python library for browser automation that uses the Chrome DevTools Protocol (CDP) directly, designed to be undetectable by anti-bot systems. Unlike Selenium-based tools, Pydoll does not use WebDriver and avoids the common detection vectors that anti-bot systems look for.
Key features include:
- Native CDP communication Connects directly to Chrome/Chromium via CDP websocket without intermediary drivers, avoiding the automation flags and fingerprints that WebDriver-based tools leave behind.
- Event-driven architecture Built around an async event system that can listen for and react to browser events like network requests, console messages, and DOM changes.
- Network interception Can intercept, modify, and mock network requests and responses, useful for blocking unnecessary resources or modifying API responses during scraping.
- Async-first design Fully asynchronous API built on Python's asyncio for efficient concurrent automation.
- Clean API Provides a high-level, Pythonic API for common browser automation tasks while still allowing direct CDP command execution for advanced use cases.
- Multi-browser support Can manage multiple browser instances and pages concurrently.
Pydoll fills a similar niche to nodriver and camoufox — browser automation with a focus on avoiding detection — but takes a different approach by providing more granular control over CDP communication and network interception.