Last reviewed: April 2026
Microsoft ended official support for all Xamarin SDKs on May 1, 2024. That date did not make Xamarin irrelevant. It created a two-track challenge for engineering teams across the United States. Those running active Xamarin apps now need stable, long-term maintenance partners. Those eyeing the future need specialists who can migrate Xamarin codebases to .NET MAUI without disrupting production systems.
Neither problem is solved by a generic mobile app agency. Both require developers who understand C# shared code architecture, platform-specific renderers, and the differences between Xamarin.Forms handler models and .NET MAUI’s slim handler architecture.
This guide evaluates the top Xamarin development companies in 2026 based on one standard: each firm was selected for a distinct specialization. You will not find ten companies doing the same thing. You will find ten firms, the majority of them US-based, each representing a clear category. That structure helps you answer the question that matters: which company fits your specific need?
What is Xamarin?
Xamarin is a Microsoft-owned, open-source cross-platform mobile development framework that uses C# and .NET to build native apps for iOS, Android, and Windows from a single shared codebase. Developers can share up to 90% of application logic while retaining access to native APIs on each platform.
Why Xamarin Expertise Still Matters in 2026
Cross-platform frameworks move fast. React Native, Flutter, and .NET MAUI have all expanded their market share since 2022. Despite this, a significant number of enterprise applications still run on Xamarin.Forms. Ripping them out and rebuilding is not the default answer. Businesses with stable, functional apps weighing a migration need to understand the cost and risk before committing.
According to a 2023 Stack Overflow Developer Survey, Xamarin was used by approximately 7% of professional developers globally. That figure represents a large base of active applications, many of which belong to mid-market and enterprise companies in the US, where .NET and the Microsoft ecosystem run deep.
The practical reality for most engineering teams in 2026 is a hybrid: maintain the existing Xamarin app while planning a phased migration to .NET MAUI. That requires a very different kind of partner than one who simply builds new apps.
What is .NET MAUI?
.NET MAUI (Multi-platform App UI) is the official Microsoft successor to Xamarin. It targets Android, iOS, macOS, and Windows from a single project structure using C# and XAML. Unlike Xamarin, which required separate platform projects, .NET MAUI uses a single-project, multi-target architecture built on .NET 6 and later.
How These Companies Were Selected
Every company on this list was evaluated against three criteria. First, their entire website had to reflect the stated specialization, not just a single service page or blog post. Second, they needed documented case studies, client outcomes, or technical portfolios that demonstrate real delivery experience. Third, each firm had to represent a distinct category so that no two entries overlap in what they offer.
The selection skews toward US-based companies, with at least seven holding primary operations in the United States. Non-US firms appear only where their specialization fills a category that no US-based firm covers at the same depth.
Generalist agencies, Clutch-only listings with thin positioning, and companies whose Xamarin content consists entirely of blog posts without delivery evidence were excluded.
Top Xamarin Development Companies 2026
1. Softeq
Founded: 1997 | Headquarters: Houston, TX, USA | Team Size: 500+
Softeq sits in a category of its own for Xamarin development: hardware-connected mobile apps. The company holds a Xamarin Authorized Consulting Partner designation and a Microsoft Gold Application Development Partnership. Its Xamarin engagements consistently combine mobile app delivery with firmware, Azure IoT infrastructure, and embedded systems. The SNOO smart bassinet project for Happiest Baby, Inc. is a documented example: Softeq built both the Xamarin-based iOS and Android app and the firmware for the device’s embedded sound-detection hardware. That dual hardware-software capability is rare among mobile development firms.
| Notable for | Xamarin Authorized Consulting Partner; Microsoft Gold Application Development Partner; documented IoT-connected Xamarin delivery |
| Core strength | Companies building connected product apps where the Xamarin mobile layer is one component of a larger hardware or IoT system |
| Best suited for | Hardware-connected Xamarin apps where mobile interfaces need to communicate with embedded devices, firmware, or Azure IoT infrastructure |
| When to choose | Your project involves a physical device, sensor data, or firmware alongside the mobile application. Softeq handles the full technical stack rather than requiring separate vendors for hardware and software. |
2. ScienceSoft
Founded: 1989 | Headquarters: McKinney, TX, USA | Team Size: 750+
ScienceSoft is one of the longest-standing .NET and Xamarin specialists in the US market. Founded in 1989 and operating from McKinney, Texas, the company focuses on complex enterprise environments where compliance, legacy system integration, and long-term maintainability take priority over speed to market. Its client roster includes Nestle, Deloitte, NASA JPL, and Walmart. ScienceSoft’s Xamarin and .NET MAUI practice runs inside a broader Microsoft ecosystem competency that spans Azure, SharePoint, Dynamics 365, and Power BI. For teams managing Xamarin apps inside a wider Microsoft enterprise architecture, this depth is difficult to replicate.
| Notable for | Enterprise-grade .NET and Xamarin modernization with compliance-focused delivery for Fortune 500 clients |
| Core strength | Large enterprises with existing Microsoft infrastructure that need Xamarin maintenance or migration managed within strict compliance and security requirements |
| Best suited for | Legacy Xamarin app modernization inside complex Microsoft enterprise environments, including regulated industries such as healthcare and finance |
| When to choose | You are running Xamarin inside a Microsoft-heavy enterprise stack and need a single firm to handle both the mobile layer and broader .NET architecture without escalating risk. |
3. Algoworks
Founded: 2006 | Headquarters: Sunnyvale, CA, USA | Team Size: 500-999
Algoworks built its Xamarin practice alongside a Salesforce consulting operation, which gives it an angle most mobile development firms lack. When a business needs its Xamarin app to connect with Salesforce CRM workflows, Service Cloud, or Einstein analytics, Algoworks can handle both sides of that integration without coordination overhead between vendors. The company has delivered Xamarin projects for clients including Coca-Cola and serves a client base that spans startups to enterprise accounts. Its customer retention rate, documented at 99% across its services, indicates consistent delivery quality. The Salesforce-Xamarin combination is the specific niche Algoworks occupies.
| Notable for | Xamarin app development with integrated Salesforce connectivity; 99% client retention across engagements |
| Core strength | Sales teams, field service operations, and customer-facing companies that run Salesforce and need their mobile app tightly integrated with CRM data |
| Best suited for | Cross-platform Xamarin apps that must connect to Salesforce CRM, Service Cloud, or Einstein workflows |
| When to choose | Your Xamarin app needs to read from or write to Salesforce records, and you do not want a separate system integrator managing the CRM connection. |
4. Innowise
Founded: 2007 | Headquarters: Atlanta, GA, USA (Global Delivery Centers in Eastern Europe) | Team Size: 850+
Innowise focuses specifically on the migration path from Xamarin.Forms to .NET MAUI. Its documented service line covers end-to-end migration planning, codebase assessment, incremental migration execution, and post-migration support. The company operates under a US-led development standard with delivery centers in Eastern Europe, giving it the capacity to run large migration projects in parallel streams. Where other firms treat .NET MAUI migration as one service among many, Innowise has structured it as a primary practice with defined process stages, from evaluating renderer compatibility to testing against the new MAUI handler architecture.
| Notable for | Structured Xamarin.Forms to .NET MAUI migration service with documented process stages and post-migration support |
| Core strength | Engineering teams with mature Xamarin.Forms applications that need a structured migration plan and phased execution rather than a full rebuild |
| Best suited for | Large-scale codebase migration from Xamarin.Forms to .NET MAUI with reduced downtime and incremental delivery |
| When to choose | Your Xamarin.Forms app is large and complex, your team cannot dedicate full internal resources to migration, and you need a firm with a defined migration methodology rather than ad hoc refactoring. |
5. Softweb Solutions (an Avnet company)
Founded: 2009 | Headquarters: Hoffman Estates, IL, USA | Team Size: 250-499
Softweb Solutions, now operating as part of Avnet, brings an industrial and manufacturing angle to Xamarin development that most mobile firms do not carry. Its Xamarin practice connects to an IoT and Microsoft Azure practice that serves factory floor operations, supply chain management, and industrial automation clients. The company documented a specific service offering around Xamarin to .NET MAUI migration consulting, with named process steps covering codebase identification, dependency updates, and post-migration QA. Being backed by Avnet, one of the world’s largest electronics distributors, gives Softweb Solutions supply chain and hardware procurement depth that independent agencies cannot offer.
| Notable for | Xamarin and .NET MAUI development for industrial, manufacturing, and supply chain environments; backed by Avnet’s electronics distribution network |
| Core strength | Manufacturing companies, industrial automation clients, and supply chain operations that need cross-platform mobile apps connected to factory floor systems or IoT sensors |
| Best suited for | Xamarin mobile apps for industrial operations and IoT-connected manufacturing environments with Azure cloud integration |
| When to choose | Your use case involves shop floor monitoring, equipment tracking, or supply chain visibility and you need a mobile development partner with genuine industrial sector experience. |
6. Rightpoint
Founded: 2007 | Headquarters: Chicago, IL, USA | Team Size: 500+
Rightpoint, a Genpact company, positions its mobile practice around enterprise customer experience. Its Xamarin work sits inside a broader digital transformation portfolio that includes customer journey design, commerce platforms, and workplace apps. Rightpoint has delivered cross-platform mobile solutions for clients in retail, financial services, and healthcare, with a focus on the front-end experience layer rather than backend systems. This experience-first approach means Rightpoint is best placed when the quality of the mobile interface and user research is the primary variable, rather than backend infrastructure complexity.
| Notable for | Enterprise customer experience-led mobile development; a Genpact company with cross-sector enterprise client base |
| Core strength | Large enterprises undergoing digital transformation who need their Xamarin app redesigned or rebuilt with a documented UX methodology and brand consistency across platforms |
| Best suited for | Xamarin and cross-platform mobile apps where UX research, journey design, and front-end experience quality drive project success |
| When to choose | The primary problem with your current Xamarin app is user experience quality or brand inconsistency rather than backend instability or migration risk. |
7. Iflexion
Founded: 2000 | Headquarters: Denver, CO, USA (HQ); Global delivery centers | Team Size: 500+
Iflexion brings over two decades of .NET development to its Xamarin practice. The company serves Fortune 500 clients across finance, insurance, and retail with a focus on secure, scalable enterprise apps. Its Xamarin portfolio includes cross-platform mobile solutions built with a strong emphasis on code architecture and long-term maintainability. Iflexion operates a dedicated quality assurance practice that runs independently from development, which reduces defect rates on complex cross-platform projects where platform-specific rendering issues are common.
| Notable for | Two decades of .NET and enterprise mobile development; independent QA practice for cross-platform defect reduction |
| Core strength | Enterprises in regulated industries that need their Xamarin app built or maintained to audit-ready security standards with thorough cross-platform testing |
| Best suited for | Xamarin apps for finance, insurance, and retail enterprises that require strong code architecture, security compliance, and independent quality assurance |
| When to choose | Your project involves sensitive financial or insurance data, and you need a firm with documented security practices and a separate QA team rather than developer-led testing. |
8. Intellectsoft
Founded: 2007 | Headquarters: Palo Alto, CA, USA | Team Size: 300+
Intellectsoft focuses on Xamarin development for the healthcare sector. The company has built cross-platform mobile applications for clinical workflows, telehealth interfaces, and patient-facing health tools, with documented HIPAA compliance practices. Its Xamarin healthcare projects go beyond app development to include HL7 and FHIR integration, connecting mobile apps to electronic health record systems. This combination, Xamarin development plus clinical data integration standards, is a specific niche within the broader Xamarin market.
| Notable for | Healthcare-specific Xamarin development with HIPAA compliance and HL7/FHIR integration capabilities |
| Core strength | Digital health companies, hospital systems, and telehealth platforms that need HIPAA-compliant cross-platform mobile apps connected to EHR or PHR systems |
| Best suited for | Cross-platform Xamarin apps for clinical environments, telehealth, and patient engagement that require healthcare data standard compliance |
| When to choose | You are building a Xamarin app in healthcare and need a development partner with documented HIPAA compliance practices and clinical data integration experience, not a generic mobile agency that claims healthcare experience. |
9. EPAM Systems
Founded: 1993 | Headquarters: Newtown, PA, USA | Team Size: 55,000+
EPAM Systems operates at a scale that separates it from every other company on this list. For large enterprises running Xamarin at scale across multiple product lines or global markets, EPAM provides the staffing depth and methodology to manage parallel development streams. The company holds Microsoft Gold Partner status and has delivered Xamarin and .NET solutions for clients including Google, NASA, and Siemens. EPAM’s Xamarin capability sits inside a delivery model built for multi-year, multi-team engagements rather than single-project delivery.
| Notable for | Microsoft Gold Partner with 55,000+ engineers; documented Xamarin delivery for Google, NASA, and Siemens at enterprise scale |
| Core strength | Large multinational enterprises that need Xamarin development resources at a scale that exceeds a standard agency, with consistent delivery methodology across teams and regions |
| Best suited for | Global-scale Xamarin development and maintenance programs across multiple product lines, teams, or geographies |
| When to choose | You are running Xamarin development across multiple teams, markets, or product lines and need a partner with the organizational scale and delivery methodology to manage program-level complexity. |
10. Rishabhsoft
Founded: 2000 | Headquarters: Naperville, IL, USA | Team Size: 200-499
Rishabhsoft brings a focused Microsoft ecosystem practice to Xamarin maintenance and .NET MAUI migration consulting. Beyond Xamarin, the company provides services across ASP.NET, .NET Core, Azure, SharePoint, Power BI, and Dynamics 365. This means a business running a Xamarin app alongside other Microsoft tools can work with a single partner to manage dependencies, update integrations, and execute migration without breaking connected services. Rishabhsoft has documented its Xamarin to .NET MAUI migration methodology publicly, covering codebase assessment, dependency mapping, and migration readiness checklists.
| Notable for | Full Microsoft ecosystem coverage alongside Xamarin maintenance, with public documentation of its .NET MAUI migration methodology |
| Core strength | Mid-market businesses using Xamarin alongside Azure, SharePoint, Power BI, or Dynamics 365 that need a single Microsoft specialist to manage the whole connected environment |
| Best suited for | Xamarin maintenance and .NET MAUI migration for businesses running Xamarin as part of a wider Microsoft technology stack |
| When to choose | Your Xamarin app is one component of a larger Microsoft ecosystem and you need a partner who can maintain or migrate the mobile layer without disrupting connected Azure or Dynamics services. |
How Xamarin Development Costs Break Down in 2026
Cost varies significantly based on what kind of engagement you need. Legacy maintenance, migration, and new development each carry different resource profiles.
Legacy Xamarin maintenance: Retainer-based engagements for bug fixes, OS compatibility updates, and dependency patches typically range from $5,000 to $25,000 per month depending on app complexity. Companies keeping Xamarin apps live on iOS 17 and Android 14 with OS-level changes need ongoing specialists, not a one-time fix.
Xamarin to .NET MAUI migration: Microsoft estimates that most Xamarin.Forms apps require a few weeks to several months depending on codebase size. For a medium-complexity application, independent estimates from migration specialists place project costs between $40,000 and $150,000 when factoring in codebase assessment, UI refactoring, handler conversion, dependency updates, and post-migration QA.
New cross-platform development with .NET MAUI: New builds using .NET MAUI or Xamarin for legacy compatibility range from $30,000 to $200,000 for mid-market projects. Enterprise programs requiring multi-platform delivery, backend integration, and long-term support contracts operate in a different budget range entirely.
The Xamarin to .NET MAUI Migration Decision: Three Questions Before You Commit
Before selecting a Xamarin development company for a migration project, your team needs clear answers to three operational questions. The answers determine which type of firm fits your situation.
Question 1: What is actually broken in your Xamarin app right now?
If nothing is broken, the business case for migration is weaker than vendors will suggest. Apps that run stable on current iOS and Android builds with no planned feature changes may cost more to migrate than to maintain for another 12 to 18 months. Migration is correct when: new OS versions are causing crashes, third-party libraries have dropped Xamarin support, or your roadmap requires features that .NET MAUI supports natively but Xamarin does not.
Question 2: How much of your codebase is shared C# versus platform-specific code?
Apps with 70% or more shared C# code migrate more cleanly. Apps built heavily around Xamarin custom renderers face a more complex conversion because renderers must be rebuilt as handlers in .NET MAUI. Your selected migration partner should assess this ratio in an initial codebase review before any fixed-price proposal.
Question 3: Do you have the internal .NET capacity to validate migrated code?
Migration firms deliver code. Your team tests it in context. If your internal .NET capacity is thin, choose a migration partner with an independent QA practice, like Iflexion or ScienceSoft, rather than one whose QA is limited to developer-level testing.
Specialization Map: Matching Company to Project Type
Each of the ten companies above represents a different category. Use this reference to match your project type to the right firm.
| Project Type | Primary Match | Secondary Match |
| IoT-connected Xamarin apps | Softeq | Softweb Solutions |
| Enterprise legacy modernization | ScienceSoft | EPAM Systems |
| Salesforce-integrated mobile app | Algoworks | Rightpoint |
| Xamarin to .NET MAUI migration | Innowise | Rishabhsoft |
| Industrial and manufacturing apps | Softweb Solutions | ScienceSoft |
| Customer experience-led rebuild | Rightpoint | Intellectsoft |
| Finance and insurance sector apps | Iflexion | ScienceSoft |
| Healthcare HIPAA-compliant apps | Intellectsoft | ScienceSoft |
| Global-scale enterprise programs | EPAM Systems | Iflexion |
| Microsoft ecosystem maintenance | Rishabhsoft | ScienceSoft |
What to Ask a Xamarin Development Company Before Signing
Evaluating a Xamarin vendor requires specific technical questions. Generic discovery calls about team size and process will not surface the capability gaps that matter.
- Ask for a specific Xamarin or .NET MAUI project where they encountered a custom renderer migration challenge. Request a technical description of how they resolved it.
- Ask which version of Xamarin.Forms their most recent project used and whether they have executed a migration using the .NET Upgrade Assistant. This reveals practical experience versus theoretical knowledge.
- Ask how they handle C# shared code that references deprecated Xamarin.Essentials namespaces post-migration. Inexperienced firms will not have a prepared answer.
- If your project involves regulated data, ask for a named compliance standard they have implemented (HIPAA, SOC 2, FedRAMP) and a client reference from that sector.
- Ask how they test cross-platform rendering differences between iOS and Android after a Xamarin build. The answer reveals how seriously they treat platform-specific QA.
Conclusion: Specialization Over Generalism
The Xamarin development market in 2026 is a specialist market. The firms that matter are not the ones with the longest service lists. They are the ones whose entire practice reflects a specific kind of delivery. Softeq builds hardware-connected apps. ScienceSoft manages legacy enterprise environments. Algoworks bridges Xamarin and Salesforce. Innowise runs structured migrations.
Matching your project type to the right specialization is the only variable that reliably improves outcomes. A firm with twenty years of experience in the wrong category will underperform a focused specialist every time.
Before issuing an RFP or scheduling a discovery call, define whether your primary need is maintenance, migration, new development, or sector-specific compliance. That answer determines the shortlist. Everything else is a detail.
About the Author
This article was researched and written by a senior technology content specialist with over eight years of experience covering the Microsoft .NET ecosystem, cross-platform mobile development, and enterprise software procurement. The analysis draws on publicly available technical documentation, verified company profiles, and primary source client testimonials.