Open source. Open possibilities.

Karate is an open-source test automation framework that unifies API testing, mocks, performance testing, and UI automation into a single tool.

Toxiproxy is a framework for simulating network conditions to test application resiliency and identify single points of failure in CI and development environments.

Playwright is a comprehensive framework for web automation and testing that provides a single API to drive Chromium, Firefox, and WebKit across Linux, macOS, and Windows.

Keploy is an open-source, language-agnostic API and integration testing tool that records real API calls, database queries and streaming events via eBPF, then replays them as tests and data mocks without code changes.

A local Node.js CLI that scans ETH/USDC prices across Chainlink, Uniswap V2, SushiSwap, Curve and Balancer and, when a spread of 0.9% or more appears, triggers flash-loan arbitrage via a contract, with built-in wallet creation and management.

RecurSpec is a Node.js command-line testing tool that checks whether the recovery instructions in error messages actually resolve the original failure, running each case in an isolated temporary workspace and blocking unsafe commands.

Node.js CLI bot that the README presents as DeFi flash-loan arbitrage: goflash.js scans ETH/USDC prices on Chainlink, Uniswap V2, SushiSwap, Curve and Balancer and triggers a smart contract when the spread reaches 0.9%. The repository name and short description do not match the documented content.

Bruno is an open-source API client for exploring and testing APIs, designed as a lightweight, offline-only alternative to tools like Postman and Insomnia.

Puppeteer is a JavaScript library providing a high-level API to control Chrome or Firefox browsers via the DevTools Protocol or WebDriver BiDi.

Robot Framework is a generic open-source automation framework used for acceptance testing, acceptance test-driven development (ATDD), and robotic process automation (RPA).