CodART vs Moderne
CodART
github.comModerne
moderne.aiSide by side
| Figure | CodART | Moderne |
|---|---|---|
| Price from | Free | $2,000/mo |
| Free plan | Yes | — |
| Free trial | — | Yes |
| Open source | — | — |
| Web | Yes | Yes |
| Windows | — | Yes |
| macOS | — | Yes |
| Linux | Yes | Yes |
| API | Yes | Yes |
| Self-hosted | Yes | Yes |
| Plans published | 1 | 8 |
| Spec score · Code Refactoring Tools | 8.0 (#8) | 8.9 (#2) |
| Support | The repository invites questions by email at [email protected] and welcomes project contributions and discussion comments. | The contact page offers demo, sales, and quick-answer routing, while OpenRewrite is available as an open-source self-service starting point. |
| System requirements | The quick-start documentation specifies at least 8 GB RAM and 4 CPU cores, with 12 GB or more recommended for large projects. | The mass-ingest environment requires at least 2 CPU cores, 16 GB memory and 10 GB free disk; recommended CPU is 4 cores with 16 GB memory. |
Plans
Moderne
- Steering CommitteePriced on request
- Backpatch Alliance Member$2,000 a month
- Member$2,000 a month
- Backpatch Alliance Fully Managed ServicePriced on request
- Backpatch Alliance Steering CommitteePriced on request
- CommercialPriced on request
- EnterprisePriced on request
- Fully Managed ServicePriced on request
In their own words
CodART
CodART is a toolkit for automated refactoring and multi-objective optimization of Java source code. It documents 47 refactoring operations, including Extract Class, Move Method, and Encapsulate Field, and supports project-level and batch work. Its optimization uses NSGA-II and NSGA-III across eight QMOOD quality metrics. The toolkit also includes PPO-based generation of refactoring sequences and models that predict testability from source code metrics. PMD integration with custom rulesets supports code smell detection, while SciTools Understand handles code parsing and metric computation. The documented interfaces are a React web interface and a FastAPI REST API, and Docker Compose instructions explain how to run the services locally. CodART is free under an MIT License, which permits use, copying, modification, distribution, sublicensing, and sale subject to its conditions. The setup requires a separate SciTools Understand professional license; academic licenses are available for research purposes. The quick-start calls for at least 8 GB RAM and 4 CPU cores, with 12 GB or more recommended for large projects. Java is its listed supported language.
Moderne
Moderne provides infrastructure for developers and AI coding agents to analyze, modernize, secure, and govern large software systems. Its hybrid SaaS runs deterministic recipes across thousands of repositories in a single-tenant cloud environment chosen by provider and region. Moderne DX instead runs within a customer network without outbound connectivity, keeping source code, recipes, and analysis inside that perimeter. Teams can group repositories by business unit and reporting structure using one CSV file, with results rolling up to leaders. DevCenter tracks upgrade, migration, and vulnerability status, including timelines and remaining occurrences. Its marketplace has thousands of type-aware recipes, and changesets support reviewing diffs, viewing results, and making multi-repository commits or pull requests. Changelog connects to source-control services and internal systems; agents can query change context through MCP and the GraphQL API. The product supports Linux, macOS, Windows, web, API, and self-hosted deployments. Pricing is paid, from $2,000/mo. Listed plans include Member at $2,000 a month, billed monthly or yearly; Commercial at a price agreed with the maker; Steering Committee at a price agreed with the maker; Enterprise at a price agreed with the maker; and Fully Managed Service at a price agreed with the maker. Moderne states it is SOC 2 Type 2 compliant.