Open-source alternatives to Slimerjs

PhantomJS is a scriptable, headless browser engine based on WebKit that provides a programmatic interface for automating web page interactions. It operates without a graphical user interface, allowing for the execution of JavaScript to navigate pages, manipulate the document object model, and perform functional testing of web applications. The tool distinguishes itself by providing low-level control over the browser rendering lifecycle and network stack. It enables real-time interception and modification of network traffic, alongside the ability to generate visual snapshots and document expor

Selenium is a comprehensive browser automation framework that provides a standardized interface for controlling web browsers to perform automated tasks, user interactions, and data extraction. It functions as a cross-browser testing tool, enabling developers to execute identical automation scripts across various browser engines and operating systems to ensure consistent application behavior. By implementing the WebDriver protocol, it maps high-level automation commands to browser-specific drivers using a standardized HTTP-based wire protocol. The project distinguishes itself through its distr

Playwright is a comprehensive browser automation framework designed for end-to-end testing and web workflow automation. It provides a unified API to drive web applications across multiple browser engines, enabling developers to simulate complex user interactions, perform web scraping, and validate application behavior in consistent, isolated environments. The framework distinguishes itself through a web-first testing paradigm that prioritizes stability and resilience. By utilizing an auto-waiting actionability engine and accessibility-tree-based locators, it eliminates common sources of test

A simple and stable cross-browser testing tool. 简单稳定的跨浏览器测试工具。

TestCafe is a Node.js end-to-end web testing framework used to automate browser tests with JavaScript or TypeScript. It serves as a cross-browser testing tool and a command-line execution engine designed for integration into continuous integration pipelines. The framework supports behavior-driven development by mapping human-readable Gherkin syntax to automation logic. It also includes an integrated web accessibility auditor to identify violations within web applications. The toolset covers a broad range of automation capabilities, including parallel test execution across multiple browser in

Puppeteer is a browser automation library that provides a programmatic interface for controlling web browsers to execute tasks, simulate user interactions, and perform end-to-end testing. It functions as a headless browser controller, managing browser lifecycles, isolated session contexts, and remote connections to facilitate stable, automated web-based workflows. The library distinguishes itself through its deep integration with the Chrome DevTools Protocol, utilizing a bidirectional message bus to execute commands and receive real-time event notifications. It supports advanced automation pa

Intern is a JavaScript test framework and runner designed for executing unit and functional tests across different environments. It serves as an end-to-end testing tool and cross-browser testing suite to verify that application behavior remains consistent across multiple desktop and mobile web browsers. The project enables automated browser testing by controlling web drivers and utilizing cloud testing services to simulate user interactions. This allows for the automation of functional tests and cross-platform web testing to identify bugs in a web interface. The system provides capabilities

Protractor is a WebDriver-based end-to-end testing framework and browser automation tool. It serves as a frontend integration test suite used to verify web application flows by simulating user behavior and executing JavaScript within a browser. The framework is specifically designed for testing Angular applications, providing specialized locators and synchronization tools that align with the framework lifecycle. It distinguishes itself through automatic test step synchronization, which pauses execution until pending page tasks are completed to ensure stable browser execution. The tool covers

Nightmare is an Electron-based browser automation library and headless browser controller. It provides the infrastructure to programmatically navigate web pages, interact with DOM elements, and execute JavaScript within a background browser instance. The project distinguishes itself by integrating a full Chromium instance within an Electron shell, allowing for the management of browser sessions, network proxy settings, and persistent storage partitions. It enables the capture of page states as PNG screenshots, PDF documents, or HTML files. The tool covers a broad range of capabilities includ

Zombie is a headless browser testing framework and full-stack test runner that simulates a complete browser environment entirely within Node.js. It renders and manipulates a virtual DOM using JavaScript alone, without relying on any native browser engine, and processes events, scripts, and page interactions through a single-threaded event loop. This makes it a Node.js browser automation tool that can load, navigate, and interact with web pages programmatically for testing, scraping, or debugging purposes. The framework distinguishes itself through several integrated capabilities that work tog

Taiko is a browser automation framework and web end-to-end testing library used to perform programmatic user actions and verify application behavior. It functions as a headless browser testing tool capable of simulating real interactions and asserting page states in Chromium and Firefox. The project includes a browser interaction recorder that captures live actions and exports them as executable JavaScript automation scripts. It also serves as a web accessibility auditor, analyzing pages to detect accessibility violations and ensure compliance with inclusive design standards. The framework c

Karma is a JavaScript test runner designed for executing test suites across multiple real web browsers to ensure cross-browser compatibility. It functions as a browser-based execution system that launches browsers, captures console output, and provides a command line interface for running automated tests within continuous integration pipelines. The project utilizes a plugin architecture that allows for the integration of third-party launchers, reporters, and preprocessors. It employs an adapter-based framework to execute tests from various assertion libraries through a unified runner interfac

Selenoid is a powerful implementation of Selenium hub using Docker containers to launch browsers.

Go Grid Router (aka Ggr) is a lightweight active load balancer used to create scalable and highly-available Selenium clusters.

AUnit README

🖥️ Award-winning extension to enhance ChatGPT with wide/full/tall-screen spamblock modes. Also works on poe.com!

Rust-based framework to Fuzz Solana programs, designed to help you ship secure code.

This library makes your CL unittests more readable.

Chaos testing, network emulation, and stress testing tool for containers

Runs a load test on the selected URL. Fast and easy to use. Can be integrated in your own workflow using the API.

Property based Testing for Elixir (based upon PropEr)

UI Recorder is multi-platform UI test case recorder like Selenium IDE but more powerful than Selenium IDE!

Pure Go Redis server for Go unittests

OHHTTPStubs is an HTTP network mocking library and request interceptor used to simulate server responses for testing application behavior without a live backend. It functions as a network request stubbing tool that captures outgoing network calls and replaces them with predefined mock data, custom status codes, and headers. The library distinguishes itself through its ability to simulate a wide range of network conditions, including artificial latency and connection failures. It supports dynamic response sequencing, allowing the tool to return a series of different responses for the same requ

Testing Framework for Rust

blanket.js is a simple code coverage library for javascript. Designed to be easy to install and use, for both browser and nodejs.