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Moderne
Code modernization platform from Miami, built on the OpenRewrite project, that makes the same upgrade or security fix across thousands of repositories at once.
Large engineering organizations with hundreds of Java, .NET, or Python repositories that face repeated framework upgrades and security fixes.
Small teams with a few repositories, or buyers who want a low-cost self-serve tool rather than an enterprise platform with forward deployed engineers.
Verdict
Moderne is a code modernization company in Miami, Florida, founded in 2020 by Jonathan Schneider and Olga Kundzich. Its platform builds on OpenRewrite, the open-source refactoring project Schneider started at Netflix, and runs recipes that upgrade frameworks, fix vulnerabilities, and migrate code across entire repository sets, now with coding agents driving the recipes. It matters because a large bank or retailer can make one tested change across tens of thousands of repositories, which turns multi-year upgrade programs into weeks of work.
Score Breakdown
How Moderne scores in the categories that matter to its buyers.
Pricing
Moderne publishes typical prices for its platform and its Backpatch Alliance membership. Larger editions are quoted by sales.
| Plan | Price | What stands out |
|---|---|---|
| Moderne Platform, Commercial | $250K typical | For up to about 1,000 developers and hundreds of repositories; one part-time forward deployed engineer |
| Moderne Platform, Enterprise | Contact sales | Thousands of developers; hybrid SaaS or on-prem with Moderne DX |
| Fully Managed Service | Contact sales | Moderne owns the SLA for the outcome, with full-time project management |
| Backpatch Alliance, Member | $2,000 / month | Every backpatch the Alliance produces, for one legal entity |
The Field at a Glance
How Moderne compares with other AI legacy code modernization vendors we reviewed, by Overall Score and relative typical engagement cost.
Moderne scores 7.8 in AI legacy code modernization, ahead of Mechanical Orchard (7.7) and Zengines (7.6). Relative cost lands upper for this subcategory.
Use-case matrix
| Use case | Fit | Notes |
|---|---|---|
| Java and Spring Boot upgrades | Strong | Squarespace cut a four-year Spring Boot upgrade to under a year. |
| Security fixes across many repos | Strong | Recipes apply the same remediation everywhere it is needed. |
| Bank-scale code estates | Strong | A global bank ran it across 50,000 repositories. |
| Coding agents on large codebases | Strong | Agents drive deterministic recipes rather than free-form edits. |
| Mainframe COBOL rewrites | Weak | Moderne focuses on Java, .NET, Python, Kotlin, and JavaScript code. |
| Small teams on a budget | Weak | Typical commercial pricing starts around $250K. |
Who it’s for
Good fit
- Banks and insurers with large Java estates
- Platform teams running framework upgrades
- Security teams fixing the same CVE in many repos
Poor fit
- Startups with a handful of repositories
- Mainframe-only modernization programs
- Teams that want a free self-serve tool
Review Excerpts
Below are excerpts from public reviews. Our team scoured public reviews, forums, and chat rooms to get a balanced view of customers' experience with this company. Paid reviews and pay-for-play sites such as Clutch were excluded.
“When we saw the demo, the team looked at me and said, ‘Now? Can we have it now?’ It was exactly what we needed.”
A leading global bank estimates it saved 30 developer-years each on Java and Spring upgrades, and 10 more on OWASP Top 10 remediation by running Moderne across 50,000 repositories. One team cut a 64-hour upgrade effort to eight hours.
Moderne lists a typical price of $250K for its Commercial platform edition, sized for up to about 1,000 developers, so smaller engineering teams have no low-cost entry plan.
Methodology
This page is an independent evaluation of Moderne for buyers comparing options in ai legacy code modernization. AI Industry Reviews accepts no sponsorships, advertising, or pay-for-placement fees. Moderne did not pay for this review.
What we scored
The headline number is an Overall Score on a 0-10 scale. Eight criteria sit under it in two groups.
- Buyer outcomes (for ai legacy code modernization)
- Estate-wide change at scale
- Correctness of automated changes
- Language and framework coverage
- Fit for smaller teams
- Company & commercial
- Innovation & product leadership
- Project management & communication
- Pricing
- Contract fairness
Pricing measures whether the price looks fair for the value delivered, including packaging and renewal friction that show up in real buying cycles.
Score Composition
| Input | Weight | What it covers |
|---|---|---|
| Reviews | 40% | A proprietary read of what practitioners say about likes, complaints, and day-to-day use, including public review sites, forums, and private chat rooms. Paid reviews and pay-for-play sites such as Clutch are out of scope. |
| Product | 35% | Hands-on look at screens and workflows. |
| Pricing | 15% | Whether the price looks fair for what you get. |
| Docs & training | 10% | Docs, tutorials, and training material. |
How we balanced the evidence
The Overall Score is the simple average of the eight criteria. Recommendation language follows that score and the fit pattern described above.
Scope
Moderne is graded here as ai legacy code modernization. Criteria scores can move as more review volume and product checks are added.