Simplex Method Ltd. is a software company based in Bulgaria. Rather than positioning itself as a self-service developer tool, it presents itself as a modernization consulting and delivery team for enterprise legacy .NET systems. Its core use cases include upgrading, migrating, maintaining, and refactoring legacy systems built with VB.NET, C#, .NET Framework, classic ASP, WPF/WinForms, SQL Server, and related technologies. Its services are primarily aimed at EU customers, with an emphasis on being NDA-friendly and GDPR-compliant.
In terms of functionality and use cases, it covers a fairly complete modernization path across the Microsoft technology stack: upgrading .NET Framework to .NET 8/9/10, migrating from VB.NET to C#, transitioning from classic ASP to ASP.NET Core, breaking down monoliths, upgrading dependencies, performance tuning, API layering, CI/CD, and automated testing. On the desktop side, it supports WPF/WinForms modernization and uses Avalonia UI to build cross-platform applications for Windows, Linux, and macOS. At the infrastructure level, it also covers SQL Server upgrades, index and architecture optimization, backups, disaster recovery, monitoring, as well as deployment on Azure, IIS, virtual machines, and containers.
Its delivery process is relatively clear: it starts with a short discussion to understand the goals, followed by an audit of code, dependencies, deployment, and risks. It then provides a modernization roadmap, milestones, pilot plan, and rollback strategy, before proceeding with cautious production rollout, documentation, and ongoing support. This approach is well suited to risk-sensitive business systems. However, the website only provides service descriptions and does not disclose detailed migration methodologies, case studies, sample reports, or public technical documentation, so additional materials would still need to be requested during evaluation.
Pricing information is not public, and there are no fixed packages, hourly rates, or project price ranges shown. For maintenance support, the website mentions incident response, small improvements, monitoring, capacity planning, documentation, and knowledge transfer, available either on demand or via a retainer model, but SLA levels are not specified. For companies with strict budget approval processes, an upfront system assessment will be necessary to define scope and cost.
Its strengths are a focused positioning, a clearly defined technology stack, an emphasis on low-risk migration and rollback, and coverage across desktop, web, database, deployment, and maintenance work. Its limitations are limited transparency, with no public case studies, customer reviews, pricing, or quantified outcomes. It is also not a general-purpose IDE, SDK, or SaaS tool, and instead depends more on custom service delivery capabilities. It is best suited for companies with critical legacy .NET assets that need a careful upgrade but lack sufficient internal resources, especially EU-based organizations and users of the Microsoft technology stack.
The websiteβs accessibility from mainland China cannot be determined from the main content, and payment methods are not disclosed. If Chinese teams are considering similar needs, they may want to compare local Microsoft partners, software modernization outsourcing teams, or an internal implementation approach using tools such as Microsoft Upgrade Assistant, Azure DevOps, and Avalonia.
β This review is compiled from public sources and does not constitute a purchase recommendation. Verify all facts on the vendor's official site. Verify on simplexmethod.com official site.
simplexmethod.com is an United Kingdom Dev Tools provider. TG4G tracks its product information, an overall rating of 6.0/10, and a China-accessibility score of Workable. Click "Visit Official Site" to reach simplexmethod.com directly.