Best 17 Tools for Debugging Code in 2026

Claude Code is a terminal-based AI assistant that understands your entire codebase and helps you code faster. You simply describe what you want in plain English, and it writes the code, makes changes across multiple files, and runs tests to verify everything works.

Kilocode is a tool that brings AI assistance directly into your code editor. You can ask it to write code, fix problems, or explain things in plain language. It works as an extension for VS Code and other similar editors like Cursor and JetBrains.

Cline is an AI coding agent that lives inside popular code editors like VS Code and JetBrains. It can read your project files, understand your codebase, write and edit code, run terminal commands, and even test web applications in a browser. All of this happens with your permission at every step.

Claude is an AI assistant built by Anthropic that helps with chat, writing, coding, research, and everyday work tasks. You can use it on the web, desktop, or mobile app, and it remembers context across conversations through memory and projects.

Replit is an online platform where you can write code, build apps, and publish them to the internet, all from your browser. No downloads or installations needed. It works like Google Docs but for creating software.

Bruno is an "offline-first API client" that revolutionizes how developers test and manage APIs. Instead of forcing you to create accounts or store data in the cloud, Bruno saves everything directly on your device using a simple text format called "Bru."

Z AI is a platform built by a Chinese AI company that creates advanced language models called GLM. You can chat with it to get help with coding, writing, research, and design tasks. It also offers a desktop coding agent called ZCode, which plans, writes, and checks code on its own for bigger projects.

DeepSeek is an AI company from China that builds smart chat and reasoning models. You can use it for free through its website or mobile app to ask questions, get help with writing, or solve coding problems. Instead of just giving short answers, DeepSeek can think through hard problems step by step, which makes it strong at math, coding, and reasoning tasks.

Cubic is an AI-powered code review platform designed to streamline the pull request process for software development teams. Think of it as having an expert code reviewer who understands your entire codebase and can spot bugs, security issues, and code quality problems instantly.

HTTPie is a tool designed for testing APIs and HTTP servers with an easy-to-understand approach. You type commands that look similar to the actual HTTP requests you want to make, and HTTPie handles the technical details for you. The responses come back formatted with colors, making JSON and other data easy to read.