Best 8 tools for Writing Unit Tests in 2025

Graphite is a comprehensive code review platform designed for modern engineering teams who want to move fast without sacrificing quality. At its core, the tool enables developers to create "stacked" pull requests, allowing them to build new features on top of unmerged code instead of waiting for reviews to complete.

Bito is an AI-powered code review and development assistant designed to enhance developer productivity and code quality. Think of it as a smart coding companion that combines the power of advanced AI models with deep understanding of your codebase.

Devin is an autonomous AI software engineer developed by Cognition AI that can independently handle complex software development tasks. Think of it as having a junior developer on your team who never gets tired, works 24/7, and can tackle coding projects with minimal supervision.

GitHub Copilot is an AI-powered code completion tool that integrates directly into popular code editors like Visual Studio Code, Visual Studio, and JetBrains IDEs. It uses advanced machine learning models trained on billions of lines of public code to understand what you're trying to build and suggest entire lines or functions in real-time.

Kiro AI is an agentic Integrated Development Environment built to deliver structured, production-ready software development through spec-driven methodology. Think of it as a combination of traditional IDEs and AI planning tools, but much smarter. It uses advanced language models and incorporates intelligent agents that can analyze, plan, and implement complex software features autonomously.

Augment Code is an AI-powered software development platform built to help professional engineers work with large, established codebases. Think of it as having a smart coding partner who knows your entire project inside and out.

Trae AI is an advanced integrated development environment that brings artificial intelligence directly into your coding workflow. Built on the popular VS Code foundation, it offers a familiar interface enhanced with powerful AI capabilities that understand your code, suggest improvements, and help you build applications from scratch.

Cursor is an AI-powered integrated development environment (IDE) that combines the familiar interface of Visual Studio Code with advanced artificial intelligence capabilities. Think of it as your regular code editor supercharged with a smart AI assistant that understands your entire project.