Best AI Code Refactoring Tools for Ruby on Rails

Claude Code by Anthropic brings agentic AI development to your terminal, transforming how teams work with large and complex codebases. It connects natively to GitHub, GitLab, and local environments, giving developers the power to search, explain, and edit code with simple prompts. Claude Code can onboard new developers by mapping entire repositories, explaining architectures, and summarizing dependencies within seconds. It also automates tedious workflows—such as issue triage, refactoring, testing, and PR submission—by turning them into single-command actions. With support for models like Claude 3.5 Sonnet and Claude 3 Opus, it delivers contextual reasoning and multi-file understanding unmatched by typical copilots. Its agentic command-line interface makes it feel like an intelligent collaborator embedded in your workflow. Integration is simple: install it via npm and start coding at “thought speed.” Claude Code helps teams move from concept to commit effortlessly, combining the familiarity of the terminal with the intelligence of Claude.

The Syntax Generating Apps are the best way to find coding answers to your questions. It's easy to use and you'll be surprised at how simple it is to find answers to your coding queries in the language that you love. AskCodi offers applications for frontend/backend programming, documentation, test creators, and many other areas where users can ask questions to get answers. AskCodi supports more languages and frameworks than 50. A codebase that stores all code generated so you can return to it in the future. You can immediately increase productivity and streamline maintenance and debugging. AskCodi supports many natural languages other than english, such as german, spanish, and polish.

GitHub Copilot represents the next evolution of intelligent software development, combining AI-driven coding, collaboration, and automation in a single ecosystem. It seamlessly integrates with GitHub and leading IDEs, transforming natural language prompts into working code, tests, and documentation. The new Agent Mode allows developers to delegate tasks—Copilot autonomously writes, executes, and validates code using GitHub Actions, delivering ready-to-review pull requests. Developers can interact through Copilot Chat, switch between models like GPT-5, Claude Sonnet 4, and Gemini 2.0 Flash, and refine results with contextual feedback. Next Edit Suggestions and automated code review ensure project-wide consistency, helping teams catch bugs before they reach production. With Copilot Spaces, teams can organize shared context—code, notes, and knowledge—to produce tailored, high-quality results. Available in Free, Pro, and Pro+ plans, Copilot scales from individuals to enterprises with flexible model access and premium capabilities. Ultimately, GitHub Copilot transforms development from manual iteration to AI-augmented collaboration, enabling engineers to focus on innovation instead of boilerplate.

ChatGPT by OpenAI is a versatile AI conversational platform that provides assistance in writing, learning, brainstorming, code generation, and problem-solving across a wide range of topics. Available for free with optional Plus and Pro subscription plans, it supports real-time text and voice interactions on web browsers and mobile apps. Users can leverage ChatGPT to create content, summarize meetings, debug code, analyze data, and even generate images using integrated tools like DALL·E 3. The platform is accessible via desktop and mobile devices and offers personalized workflows through custom GPTs and projects. Advanced plans unlock deeper research capabilities, extended limits, and access to cutting-edge AI models like GPT-4o and OpenAI o1 pro mode. ChatGPT integrates search capabilities for real-time information and enables collaboration through features like Canvas for project editing. It caters to students, professionals, hobbyists, and developers seeking efficient, AI-driven support. OpenAI continually updates ChatGPT with new tools and enhanced usability.

Cosine is capable of grasping both broad concepts and intricate details to deliver answers that surpass human capabilities. We are more than just a layer over an LLM; our approach integrates various methods such as static analysis and semantic search among others. Just pose a question to Cosine about adding a new feature or altering existing code, and we will produce a comprehensive step-by-step guide. Cosine meticulously indexes your codebase, comprehending it on various dimensions; from the relationships among files and functions to an in-depth semantic analysis of the code, ensuring that any inquiry regarding your codebase can be addressed. Genie stands out as the leading AI software engineer, boasting an impressive 30% evaluation score on the widely recognized SWE-Bench benchmark. It excels at debugging, feature development, and code refactoring, performing these tasks either completely independently or in collaboration with the user, creating a partnership akin to working alongside a colleague rather than merely acting as a copilot. Essentially, both Cosine and Genie redefine the standards of what AI can achieve in software engineering.