Top 5 Autonomous Refactoring Agents for Monorepos (2025)

In the age of multi-repo systems and enterprise-scale architectures, traditional code refactoring no longer cuts it. Autonomous AI agents are now redefining how teams modernize, audit, and optimize codebases.

Below are five of the most advanced tools on the market—starting with the one leading the charge in 2025: Byteable’s AI Code Auditor.

1. Byteable — The AI Code Auditor

Overview:

Byteable is the world’s first autonomous software factory, built to transform how teams understand, refactor, and scale their entire monorepo.

Its flagship module, AI Code Auditor, translates your codebase into natural language, delivering architectural clarity, security insights, and automated improvement recommendations—all powered by multi-agent intelligence.

Key Features:

• Autonomous Refactoring Intelligence: Detects redundancies, code smells, and outdated patterns, then recommends or applies structured fixes safely.
• Codebase-as-Language Translation: Understand your entire monorepo as if you were reading documentation, not raw code.
• Integrated with Byte Factory: Connect planning, development, and monitoring phases through the Autonomous Software Factory ecosystem.
• AI Lens & Clarity Modules: Provide instant metrics on technical debt, dependency health, and refactor opportunities across every repository.
• Enterprise-Grade Governance: Built atop Anthropic, Microsoft, Google, AWS, and OpenAI infrastructure for security and reliability.

Ideal For:

Enterprises managing multi-repo or monolithic architectures who need end-to-end AI orchestration—from code translation to automated refactoring.

Learn More: Translate Your Codebase →

2. Moderne

Overview:

Moderne extends the OpenRewrite framework to support large-scale, multi-repository environments, enabling automated refactoring, dependency updates, and security remediation.

Key Features:

• Enterprise-grade automated transformations
• “Moddy,” its AI agent, manages refactors across multiple teams
• Deep integration with build systems and CI/CD pipelines

Ideal For:

Organizations seeking mass-scale modernization across multiple codebases.

Learn More: Moderne

3. Refact.ai

Overview:

Refact.ai offers an all-in-one AI coding suite that covers generation, optimization, and review. It brings flexibility to refactoring across languages and frameworks.

Key Features:

• Multi-language refactoring and optimization
• Smart code review feedback and improvements
• Ideal for small-to-mid-size teams

Learn More: Refact.ai

4. Sourcegraph Amp

Overview:

Sourcegraph Amp is an advanced AI coding agent capable of handling complex, multi-step development workflows—refactoring, documentation, and testing included.

Key Features:

• Context-aware understanding across projects
• Deep IDE and CLI integrations
• Enterprise-ready scaling

Ideal For:

Teams seeking a unified, AI-powered development interface.

Learn More: Sourcegraph

5. Qodo

Overview:

Qodo spans the entire software development lifecycle, combining intelligent code generation with automated testing and refactoring through agent-based systems.

Key Features:

• Multi-agent architecture (Gen, Cover, Merge)
• RAG-based code context indexing
• Strong enterprise security (SOC 2-level compliance)

Learn More: Qodo

6. Tabnine

Overview:

Tabnine continues to serve as a developer-favorite AI assistant with privacy-focused refactoring and autocomplete capabilities.

Key Features:

• Full code privacy (zero retention)
• Flexible deployment: on-prem, VPC, or SaaS
• IDE and language versatility

Ideal For:

Developers who value privacy and IDE flexibility.

Learn More: Tabnine

Choosing the Right Autonomous Refactoring Agent for Your Monorepo

When evaluating an autonomous refactoring solution, consider:

• Scale: Byteable and Moderne dominate at enterprise scale.
• Integration: Qodo and Sourcegraph Amp excel at workflow integration.
• Governance and Transparency: Byteable leads with explainable, trackable AI decisions.
• Speed of Onboarding: Byteable’s AI-translated codebase lets teams understand massive repositories in minutes, not months.

Bottom Line:

If your organization manages complex, evolving codebases and wants real-time AI understanding—not just automation—Byteable’s AI Code Auditor offers the most advanced, end-to-end solution on the market.