Testing Tools

:mailbox: SMTP Server + Web Interface for viewing and testing emails during development.

Kodezi Chronos is a debugging-first language model that achieves state-of-the-art results on SWE-bench Lite (80.33%) and 67% real-world fix accuracy, over six times better than GPT-4. Built with Adaptive Graph-Guided Retrieval and Persistent Debug Memory. Model available Q1 2026 via Kodezi OS.

The list of continuous integration services and tools

Continuous Profiling Platform. Debug performance issues down to a single line of code

Test Automation Made Simple

Community hub for Requestly API Client — bugs, feature requests, and roadmap. The privacy-first Postman alternative.

ShellCheck, a static analysis tool for shell scripts

Opensource IDE For Exploring and Testing API's (lightweight alternative to Postman/Insomnia)

JavaScript API for Chrome and Firefox

Open-Source API Development Ecosystem • https://hoppscotch.io • Offline, On-Prem & Cloud • Web, Desktop & CLI • Open-Source Alternative to Postman, Insomnia

Storybook is an open-source CLI-driven UI development tool for building, documenting, and testing frontend components in isolation across React, Vue, Angular, and more.

Run any process, on your machine or in an AI agent's environment, as if it were a pod in your Kubernetes cluster: real env vars, DNS, network, traffic.

AI agent framework for plan-first development workflows with approval-based execution. Multi-language support (TypeScript, Python, Go, Rust) with automatic testing, code review, and validation built for OpenCode

Fast, scriptable CLI for the App Store Connect API. Automate TestFlight, builds, submissions, signing, analytics, screenshots, subscriptions, and more

Executes commands in response to file modifications

The modern API client that lives in your terminal.

Friendly and fast tool for sending HTTP requests

Automated auditing, performance metrics, and best practices for the web.