Frontend Modernization Companies

A neutral market map of companies delivering frontend modernization, plotted by modernization approach and supplier layer. Alphabetical, never ranked or scored; paid Featured placements are labeled and do not change the ordering.

Updated 4 August 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. “Featured” is a labeled paid slot and does not change the ordering.

Migrates from:

Approach:

Supplier type:

Team size:

Region:

Frontend Modernization company comparison: source stack, approach, supplier type, team size, region, and documented evidence
Company	Approach	Type	Team size	Region
10Clouds	Approach Refactor	TypeAgency	Team sizeMid-size	RegionPoland	Documented evidence1 documented source
Accenture	Approach Rewrite	TypeAgency	Team sizeEnterprise	RegionGlobal	Documented evidence1 documented source
Avanade	Approach RefactorRewrite	TypeAgency	Team sizeEnterprise	RegionSeattle, WA	Documented evidence1 documented source
Brainhub	Approach Refactor	TypeAgency	Team sizeMid-size	RegionPoland / USA	Documented evidence1 documented source
Braintrust	Approach RefactorRewrite	TypeAgency	Team sizeMid-size	RegionGlobal	Documented evidence1 documented source
Codurance	Approach RefactorRewrite	TypeAgency	Team sizeMid-size	RegionUK/Spain	Documented evidence1 documented source
Cognizant	Approach RefactorRewrite	TypeAgency	Team sizeEnterprise	RegionGlobal (US HQ)	Documented evidence2 documented sources
DevsData	Approach Refactor	TypeAgency	Team sizeMid-size	RegionUSA / Poland	Documented evidence1 documented source
EPAM Systems	Approach RefactorRewrite	TypeAgency	Team sizeEnterprise	RegionGlobal (USA HQ)	Documented evidence5 documented sources
Globant	Approach RefactorRewrite	TypeAgency	Team sizeEnterprise	RegionGlobal (Argentina Origins)	Documented evidence1 documented source
Grid Dynamics	Approach RefactorRewrite	TypeAgency	Team sizeMid-size	RegionUSA / Global	Documented evidence1 documented source
jscodeshift	Approach Refactor	TypePlatform	Team size—	Region—	Documented evidence0 documented sources
Mobilize.Net	Approach RefactorRewrite	TypeAgency	Team sizeMid-size	RegionUSA / Costa Rica	Documented evidence1 documented source
Naturaily	Approach Refactor	TypeAgency	Team sizeBoutique	RegionPoland	Documented evidence1 documented source
Next.js Codemods	Approach Refactor	TypePlatform	Team size—	Region—	Documented evidence0 documented sources
Pagepro	Approach Refactor	TypeAgency	Team sizeBoutique	RegionPoland / UK	Documented evidence1 documented source
PITSS	Approach Rewrite	TypeAgency	Team sizeMid-size	RegionGermany / USA	Documented evidence1 documented source
Slalom	Approach RefactorRewrite	TypeAgency	Team sizeEnterprise	RegionUSA / Global	Documented evidence2 documented sources
SoftServe	Approach RefactorRewrite	TypeAgency	Team sizeEnterprise	RegionGlobal (Ukraine Origins)	Documented evidence3 documented sources
TestPros	Approach RefactorRewrite	TypeAgency	Team sizeMid-size	RegionUSA	Documented evidence1 documented source
Thoughtworks	Approach RefactorRewrite	TypeAgency	Team sizeEnterprise	RegionGlobal	Documented evidence4 documented sources
Toptal	Approach RefactorRewrite	TypeAgency	Team sizeEnterprise	RegionGlobal	Documented evidence2 documented sources

“Documented evidence” counts the migration paths and services in this domain where we hold a relationship record for that company — each one links to the page it came from, under the company’s entry below.

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 20 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 10Clouds 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

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
A Warsaw-based shop of 49 engineers moving React codebases to Next.js for large banking and fintech applications, with delivery experience spanning 95 projects across 18 countries.
Refactor
Best for
Large-scale banking/fintech apps
Modernizes
React to Next.js
Firm profile
Mid-size · Poland
Typical engagement band
Mid-market · $150K–$400K
Documented in
React to Next.js Migration Services
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
Documented in
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
Documented in
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
Documented in
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
Documented in
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
Documented in
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
Documented in
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
Documented in
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
Documented in
AngularJS to React Migration Services: Cost & Vendors, 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
Documented in
AngularJS to React Migration Services: Cost & Vendors
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
Documented in
AngularJS to React Migration Services: Cost & Vendors
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
Its VBUC and WebMAP tools automate conversion of legacy Visual Basic 6 and Silverlight codebases, positioned here for direct, tool-driven Silverlight-to-Blazor conversion rather than a ground-up rewrite.
RefactorRewrite
Best for
Rapid, direct conversion
Modernizes
Silverlight to Blazor
Firm profile
Mid-size · USA / Costa Rica
Typical engagement band
Mid-market · $150K–$400K
Documented in
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
Documented in
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
Documented in
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
Documented in
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
Documented in
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
Documented in
AngularJS to React Migration Services: Cost & Vendors, 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
Documented in
Frontend Modernization Services
Thoughtworks
Agency
Applies its own Strangler Fig incremental-replacement pattern to AngularJS-to-React and React-to-Next.js rewrites alike, with its documented fit centered on legacy codebases past 100,000 lines.
RefactorRewrite
Best for
Large legacy codebases (100K+ LOC)
Modernizes
AngularJS, React to React, Next.js
Firm profile
Enterprise · Global
Typical engagement band
Enterprise · $500K–$2M
Documented in
AngularJS to React Migration Services: Cost & Vendors, Silverlight to Blazor Migration Services, React to Next.js 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
Documented in
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 August 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 (20 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. Paid Featured placements are labeled and do not imply a recommendation.

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.