Frontend Modernization Companies

A neutral market map of companies delivering frontend modernization, plotted by modernization approach and supplier layer. Alphabetical, never ranked or scored.

Updated 4 September 2026·Peter Korpak·Methodology

Compare frontend modernization companies

Filter by what a company migrates from, its modernization approach, supplier type, team size, or region. Listed alphabetically, never ranked, scored, or rated. We currently have no sponsors. Vendor inclusion, recommendations, and highlights are editorial decisions based on documented evidence.

The lists show recorded source and target technologies. They do not prove delivery of every combination. Follow the public evidence links to the checked claims below. “Public sources not reviewed here” means we have not checked those claims; it is not a judgment of the supplier’s performance.

Migrates from:

Approach:

Supplier type:

Team size:

Region:

Frontend Modernization company comparison: recorded source and target coverage, approach, supplier type, team size, region, public evidence kind, and internal relationship records
Company	Recorded source → target coverage	Approach	Type	Team size	Region	Public evidence kind
10Clouds	Recorded source → target coverageFrom: React	Approach—	TypeDelivery firm	Team sizeMid-size	RegionPoland	Public evidence kindPublic sources not reviewed here	Internal relationship records0 internal relationship records
Accenture	Recorded source → target coverageOracle Forms to React	Approach Rewrite	TypeDelivery firm	Team sizeEnterprise	RegionGlobal	Public evidence kindPublic sources not reviewed here	Internal relationship records1 internal relationship record
Avanade	Recorded source → target coverageSilverlight to Blazor	Approach RefactorRewrite	TypeDelivery firm	Team sizeEnterprise	RegionSeattle, WA	Public evidence kindPublic sources not reviewed here	Internal relationship records1 internal relationship record
Brainhub	Recorded source → target coverageReact to Next.js	Approach Refactor	TypeDelivery firm	Team sizeMid-size	RegionPoland / USA	Public evidence kindPublic sources not reviewed here	Internal relationship records1 internal relationship record
Braintrust	Recorded source → target coverageCoverage not recorded	Approach RefactorRewrite	TypeDelivery firm	Team sizeMid-size	RegionGlobal	Public evidence kindPublic sources not reviewed here	Internal relationship records1 internal relationship record
Codurance	Recorded source → target coverageCoverage not recorded	Approach RefactorRewrite	TypeDelivery firm	Team sizeMid-size	RegionUK/Spain	Public evidence kindPublic sources not reviewed here	Internal relationship records1 internal relationship record
Cognizant	Recorded source → target coverageOracle Forms, Silverlight to React, Blazor	Approach RefactorRewrite	TypeDelivery firm	Team sizeEnterprise	RegionGlobal (US HQ)	Public evidence kindPublic sources not reviewed here	Internal relationship records2 internal relationship records
DevsData	Recorded source → target coverageReact to Next.js	Approach Refactor	TypeDelivery firm	Team sizeMid-size	RegionUSA / Poland	Public evidence kindPublic sources not reviewed here	Internal relationship records1 internal relationship record
EPAM Systems	Recorded source → target coverageAngularJS, Oracle Forms, React to React, Next.js	Approach RefactorRewrite	TypeDelivery firm	Team sizeEnterprise	RegionGlobal (USA HQ)	Public evidence kindPublic sources not reviewed here	Internal relationship records5 internal relationship records
Globant	Recorded source → target coverageAngularJS to React	Approach RefactorRewrite	TypeDelivery firm	Team sizeEnterprise	RegionGlobal (Argentina Origins)	Public evidence kindPublic sources not reviewed here	Internal relationship records1 internal relationship record
Grid Dynamics	Recorded source → target coverageAngularJS to React	Approach RefactorRewrite	TypeDelivery firm	Team sizeMid-size	RegionUSA / Global	Public evidence kindPublic sources not reviewed here	Internal relationship records1 internal relationship record
jscodeshift	Recorded source → target coverageCoverage not recorded	Approach Refactor	TypeProduct or platform	Team size—	Region—	Public evidence kindPublic sources not reviewed here	Internal relationship records0 internal relationship records
Mobilize.Net	Recorded source → target coverageSilverlight to Blazor	Approach RefactorRewrite	TypeDelivery firm	Team sizeMid-size	RegionUSA / Costa Rica	Public evidence kindPublic sources not reviewed here	Internal relationship records1 internal relationship record
Naturaily	Recorded source → target coverageReact to Next.js	Approach Refactor	TypeDelivery firm	Team sizeBoutique	RegionPoland	Public evidence kindPublic sources not reviewed here	Internal relationship records1 internal relationship record
Next.js Codemods	Recorded source → target coverageCoverage not recorded	Approach Refactor	TypeProduct or platform	Team size—	Region—	Public evidence kindPublic sources not reviewed here	Internal relationship records0 internal relationship records
Pagepro	Recorded source → target coverageReact to Next.js	Approach Refactor	TypeDelivery firm	Team sizeBoutique	RegionPoland / UK	Public evidence kindPublic sources not reviewed here	Internal relationship records1 internal relationship record
PITSS	Recorded source → target coverageOracle Forms to React	Approach Rewrite	TypeDelivery firm	Team sizeMid-size	RegionGermany / USA	Public evidence kindPublic sources not reviewed here	Internal relationship records1 internal relationship record
Slalom	Recorded source → target coverageSilverlight to Blazor	Approach RefactorRewrite	TypeDelivery firm	Team sizeEnterprise	RegionUSA / Global	Public evidence kindPublic sources not reviewed here	Internal relationship records2 internal relationship records
SoftServe	Recorded source → target coverageAngularJS, Oracle Forms to React	Approach RefactorRewrite	TypeDelivery firm	Team sizeEnterprise	RegionGlobal (Ukraine Origins)	Public evidence kindPublic sources not reviewed here	Internal relationship records3 internal relationship records
TestPros	Recorded source → target coverageCoverage not recorded	Approach RefactorRewrite	TypeDelivery firm	Team sizeMid-size	RegionUSA	Public evidence kindPublic sources not reviewed here	Internal relationship records1 internal relationship record
Thoughtworks	Recorded source → target coverageAngularJS to React	Approach RefactorRewrite	TypeDelivery firm	Team sizeEnterprise	RegionChicago, IL, USA (global)	Public evidence kindPublic sources not reviewed here	Internal relationship records3 internal relationship records
Toptal	Recorded source → target coverageReact to Next.js	Approach RefactorRewrite	TypeDelivery firm	Team sizeEnterprise	RegionGlobal	Public evidence kindPublic sources not reviewed here	Internal relationship records2 internal relationship records

The count covers this site’s migration and service links for each company, listed under its entry. It does not count verified case studies or successful projects.

The checked public sources, scoped claims and limits for suppliers across hubs are published as an open vendor evidence dataset with CSV and JSON downloads.

What evidence should a provider show?

Use these guides to decide what to ask providers and what evidence to require before accepting their work. Internal record counts and capability labels do not establish that a provider meets your requirements.

Choose a frontend stack and define a representative migration pilot
Check coexistence, API contracts, accessibility, and regression coverage before selecting a delivery team.

Approach matrix

How Frontend Modernization companies map to modernization approach

Rows group frontend modernization companies by modernization approach, defined in our 7 Rs of application modernization framework; columns separate product vendors from delivery firms.

Refactor is the most common approach here, documented by 19 of 22 companies in frontend modernization. Product vendors and delivery firms both cluster in Refactor.
Approach	Product	Delivery firm
Rehostsame code, new infrastructure or emulator	ProductNone documented	Delivery firmNone documented
Replatformsame core code, swapped runtime or managed services	ProductNone documented	Delivery firmNone documented
Refactorthe existing code is converted or restructured in place	Product jscodeshift Next.js Codemods	Delivery firm Avanade Brainhub Braintrust Codurance Cognizant DevsData EPAM Systems Globant Grid Dynamics Mobilize.Net Naturaily Pagepro Slalom SoftServe TestPros Thoughtworks Toptal
Rewriterebuilt from scratch on a new architecture	ProductNone documented	Delivery firm Accenture Avanade Braintrust Codurance Cognizant EPAM Systems Globant Grid Dynamics Mobilize.Net PITSS Slalom SoftServe TestPros Thoughtworks Toptal
Replaceswapped for a commercial or SaaS product	ProductNone documented	Delivery firmNone documented
Retain & optimizekept in place and improved	ProductNone documented	Delivery firmNone documented

1 company is not plotted: no documented approach evidence.

What each company delivers in frontend modernization

One entry per company, carrying only attributes we can point at a source for. Where a company has no published evidence for an attribute, nothing is shown rather than a placeholder.

Engagement bands in this domain

Small: $50K–$120K
Mid-market: $150K–$400K
Enterprise: $500K–$2M

Spans are the published pricing tiers on this domain’s service pages (Frontend Modernization Services), cross-checked against the cost benchmarks. A company is placed in a band by its team size — this is a statement about the size of engagement firms of that scale typically deliver here, not a rate card. We publish no per-vendor rates.

10Clouds
Agency
Offers embedded React engineers (React, TypeScript, Tailwind CSS) and a React performance-improvement service. Its Next.js use is documented in a new-build AI recruiting case study, not in a migration from React.
Modernizes from
React
Firm profile
Mid-size · Poland
Typical engagement band
Mid-market · $150K–$400K
Accenture
Agency
Positions Oracle Forms-to-React migrations as an enterprise-wide UI rollout rather than a one-off rewrite, aimed at organizations replacing the old screens across multiple regions or business units at once.
Rewrite
Best for
Global rollout of new UI
Modernizes
Oracle Forms to React
Firm profile
Enterprise · Global
Typical engagement band
Enterprise · $500K–$2M
Internal research links
Oracle Forms to React Migration Services
Avanade
Agency
Migrates Silverlight applications to Blazor within a broader Microsoft-stack modernization practice, with its documented placement centered on large corporate intranets rather than customer-facing sites.
RefactorRewrite
Best for
Large corporate intranets
Modernizes
Silverlight to Blazor
Firm profile
Enterprise · Seattle, WA
Typical engagement band
Enterprise · $500K–$2M
Internal research links
Silverlight to Blazor Migration Services
Brainhub
Agency
Runs React-to-Next.js migrations focused on performance audits for scale-ups, billed at $50-99/hr from a 500-person Poland-based engineering team under the STX Next group.
Refactor
Best for
Scale-ups needing performance audits
Modernizes
React to Next.js
Firm profile
Mid-size · Poland / USA
Typical engagement band
Mid-market · $150K–$400K
Internal research links
React to Next.js Migration Services
Braintrust
Agency
A user-owned talent network, not a fixed delivery team, that places individual React, Next.js, and Web3 engineers directly with startups and scale-ups rather than running the migration itself.
RefactorRewrite
Best for
Startups/scaleups
Firm profile
Mid-size · Global
Typical engagement band
Mid-market · $150K–$400K
Internal research links
Frontend Modernization Services
Codurance
Agency
Leads frontend rewrites through TDD and clean-architecture discipline as a software-craftsmanship consultancy, aimed at teams that make long-term maintainability an explicit delivery requirement.
RefactorRewrite
Best for
High-quality rewrites
Firm profile
Mid-size · UK/Spain
Typical engagement band
Mid-market · $150K–$400K
Internal research links
Frontend Modernization Services
Cognizant
Agency
Covers both Oracle Forms-to-React and Silverlight-to-Blazor work, positioning the former around digital-experience workflow modernization and the latter around enterprise .NET upgrades rather than a single specialized path.
RefactorRewrite
Best for
Modernizing legacy workflows
Modernizes
Oracle Forms, Silverlight to React, Blazor
Firm profile
Enterprise · Global (US HQ)
Typical engagement band
Enterprise · $500K–$2M
Internal research links
Oracle Forms to React Migration Services, Silverlight to Blazor Migration Services
DevsData
Agency
Staffs React-to-Next.js migrations with senior engineers as an augmentation model, aimed at enterprises that need experienced hands added to an existing team rather than a full outsourced project.
Refactor
Best for
Enterprises needing senior talent augmentation
Modernizes
React to Next.js
Firm profile
Mid-size · USA / Poland
Typical engagement band
Mid-market · $150K–$400K
Internal research links
React to Next.js Migration Services
EPAM Systems
Agency
Documented on three separate frontend paths (AngularJS-to-React, Oracle Forms-to-React, and React-to-Next.js), with its Next.js migrations specifically scoped to Fortune 500 codebases rather than smaller projects.
RefactorRewrite
Best for
Complex enterprise apps
Modernizes
AngularJS, Oracle Forms, React to React, Next.js
Firm profile
Enterprise · Global (USA HQ)
Typical engagement band
Enterprise · $500K–$2M
Internal research links
AngularJS to React Migration: Cost, Timeline & Roadmap, Oracle Forms to React Migration Services, React to Next.js Migration Services, Silverlight to Blazor Migration Services, Frontend Modernization Services
Globant
Agency
Uses an AI-assisted 'Augmented Coding' process to speed up reading and refactoring legacy AngularJS before rewriting it in React, aimed at consumer-facing products where customer experience is the stated driver.
RefactorRewrite
Best for
Consumer-facing applications
Modernizes
AngularJS to React
Firm profile
Enterprise · Global (Argentina Origins)
Typical engagement band
Enterprise · $500K–$2M
Internal research links
AngularJS to React Migration: Cost, Timeline & Roadmap
Grid Dynamics
Agency
Rebuilds monolithic AngularJS commerce frontends into React on a microservices-based architecture, with its documented focus concentrated in retail and CPG platforms rather than general enterprise apps.
RefactorRewrite
Best for
Retail/Commerce platforms
Modernizes
AngularJS to React
Firm profile
Mid-size · USA / Global
Typical engagement band
Mid-market · $150K–$400K
Internal research links
AngularJS to React Migration: Cost, Timeline & Roadmap
jscodeshift
Platform
An open-source, Meta-maintained CLI for running AST-based codemods across JavaScript or TypeScript files, supplying the parser and query engine most published React and Next.js upgrade codemods are built on, not a ready-made migration for any one framework.
Refactor
Mobilize.Net
Agency
The VBUC and WebMAP tools that automated conversion of legacy Visual Basic 6 and Silverlight codebases now belong to Growth Acceleration Partners and are sold as GAPVelocity.ai. GAPVelocity.ai's Silverlight page describes conversion to Angular and HTML5; a Blazor target is not stated there.
RefactorRewrite
Best for
Rapid, direct conversion
Modernizes
Silverlight to Blazor
Firm profile
Mid-size · USA / Costa Rica
Typical engagement band
Mid-market · $150K–$400K
Internal research links
Silverlight to Blazor Migration Services
Naturaily
Agency
A boutique Jamstack specialist moving React sites to Next.js with an SEO-first lens, aimed at content-heavy publishers chasing Core Web Vitals scores rather than app-like interactivity.
Refactor
Best for
Content-heavy sites needing perfect Core Web Vitals
Modernizes
React to Next.js
Firm profile
Boutique · Poland
Typical engagement band
Small · $50K–$120K
Internal research links
React to Next.js Migration Services
Next.js Codemods
Platform
Vercel's own @next/codemod CLI, shipped since Next.js 10 and updated through version 16, mechanically rewrites one breaking change at a time, such as next/image imports, so a major upgrade needs several run in sequence and only covers what Vercel has chosen to automate.
Refactor
Pagepro
Agency
Migrates Shopify and Magento storefronts onto Next.js with a headless-CMS and commerce integration focus, positioned for e-commerce rebuilds rather than general enterprise React work.
Refactor
Best for
E-commerce migrations (Shopify/Magento to Next.js)
Modernizes
React to Next.js
Firm profile
Boutique · Poland / UK
Typical engagement band
Small · $50K–$120K
Internal research links
React to Next.js Migration Services
PITSS
Agency
Runs proprietary analysis tools that map Oracle Forms and Reports' PL/SQL dependencies before automating the migration to Java, React, or APEX, aimed at cutting the risk of a manual line-by-line rewrite.
Rewrite
Best for
Deep analysis of PL/SQL dependencies
Modernizes
Oracle Forms to React
Firm profile
Mid-size · Germany / USA
Typical engagement band
Mid-market · $150K–$400K
Internal research links
Oracle Forms to React Migration Services
Slalom
Agency
Pairs Silverlight-to-Blazor migration with a strategy-first business case, and separately runs Angular-to-React rewrites in TypeScript for large enterprises wanting a UX redesign alongside the technical move.
RefactorRewrite
Best for
Angular → React for large enterprises
Modernizes
Silverlight to Blazor
Firm profile
Enterprise · USA / Global
Typical engagement band
Enterprise · $500K–$2M
Internal research links
Silverlight to Blazor Migration Services, Frontend Modernization Services
SoftServe
Agency
Fields a Vue.js and Nuxt practice for e-commerce frontend rewrites, alongside AngularJS-to-React and Oracle Forms-to-React work that extends into the backing monolith database rather than stopping at the UI.
RefactorRewrite
Best for
E-commerce frontend rewrites
Modernizes
AngularJS, Oracle Forms to React
Firm profile
Enterprise · Global (Ukraine Origins)
Typical engagement band
Enterprise · $500K–$2M
Internal research links
AngularJS to React Migration: Cost, Timeline & Roadmap, Oracle Forms to React Migration Services, Frontend Modernization Services
TestPros
Agency
An independent QA specialist, not a migration vendor, that builds test-automation suites to validate frontend rewrites in regulated banking and healthcare environments before they ship.
RefactorRewrite
Best for
QA-heavy migrations (banking/healthcare)
Firm profile
Mid-size · USA
Typical engagement band
Mid-market · $150K–$400K
Internal research links
Frontend Modernization Services
Thoughtworks
Agency
A 2021 Thoughtworks article documents moving a high-traffic listing page from AngularJS to React gradually with the strangler fig pattern, after a one-year big-bang rewrite of a search page.
RefactorRewrite
Best for
Legacy front ends that cannot pause delivery
Modernizes
AngularJS to React
Firm profile
Enterprise · Chicago, IL, USA (global)
Typical engagement band
Enterprise · $500K–$2M
Internal research links
AngularJS to React Migration: Cost, Timeline & Roadmap, Silverlight to Blazor Migration Services, Frontend Modernization Services
Toptal
Agency
Sources one or two freelance React specialists at a time from a screened network accepting roughly 3% of applicants, for teams needing focused senior help rather than a full in-house delivery team.
RefactorRewrite
Best for
Smaller projects, flexible staffing
Modernizes
React to Next.js
Firm profile
Enterprise · Global
Typical engagement band
Enterprise · $500K–$2M
Internal research links
React to Next.js Migration Services, Frontend Modernization Services

Market map

Companies to evaluate for Frontend Modernization

Scope: published frontend modernization companies with documented category, migration-path, or service evidence in this research domain.

Last evaluated 4 September 2026

208

Published modernization companies reviewed

Companies shown for frontend modernization

Platforms 2Consultancies & integrators 20

Inclusion criteria: A company must have a published profile and documented category, migration-path, or service evidence in this domain. See the evidence threshold in our research methodology.

How to choose: Start with documented buyer fit (19 profiles) and specialty evidence (22), then narrow by team size (20) and location (20). Open a profile to verify the underlying experience before shortlisting.

This is an alphabetical market map, not an ordinal ranking. Inclusion is based on documented evidence and editorial review.

Frontend modernization is supplied almost entirely by delivery firms rather than products: the codemod tooling is open source and free, so what you are buying is the judgement to use it. Evaluate delivery firms by design-system and component-library depth, state-management experience in the framework you are leaving, accessibility and Core Web Vitals evidence, and whether they can run a strangler-fig migration alongside ongoing feature work rather than pausing it. The tooling layer here — codemod runners and framework-shipped migration CLIs — automates mechanical syntax changes only; untangling business logic fused into the presentation layer stays manual, and that is where the cost sits. Companies appear alphabetically because the right fit depends on your source framework and how much shared design-system groundwork already exists.