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Let’s Build Something Together 

This could be the start of something beautiful 

Migrate Your Delphi Application to a Modern Platform on Premise or in the Cloud 

Client Consultation 

Our team designs, builds, and tests in close partnership with yours. Your requirements drive our process. And, our work succeeds by the strength of our consultants and the expert governance they bring. 

Technical Expertise 

To support your objectives, DOOR3 maintains a deep bench of skilled project managers and developers with domain expertise covering many sectors. 

User-Driven Insights 

Our award-winning UX team works to understand habits, expectations, and objectives. 

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A Leader In Delphi Migration

Founded in 2002, we’re headquartered in New York City, and supported by a global team of talented, committed professionals.

Our purpose is to benefit our clients — their people, products, and services. Our core strengths are technology, strategy, and design. Our difference is perspective. We are guided by a clear view of the promise of technology.

DOOR3 serves clients in the financial services, insurance, legal, healthcare, non-profit & education, construction & contracting, and retail industries. 

A History of Awards and Accolades

History of Awards and Accolades 

500+ Companies Serving Worldwide 

Key reasons to upgrade from Delphi to Microsoft .NET or Microsoft Azure: 

.Net Represents the Latest Technology - Microsoft created an excellent platform for software development; .NET was well conceived and well executed.

Many Programmers Want to be .Net Developers - Microsoft .NET attracts developers with technology that can address many different types of applications. .NET gives a programmer the ability to be a journeyman jack-of-all-trades with the mastery of one.  From the perspective of a development organization, this should be a compelling argument.

.Net Offers Intrinsic Support for Web Services - Web Services is well supported in .NET. It is surprisingly easy to make Web Services extensions to .NET applications. Web Services is an effective method for applications to exchange information locally and remotely using XML as the primary interchange format. Web Services is not by any means limited to Microsoft.

.Net Can Address a Broader Class of Applications - Microsoft .NET is a flexible technology that can be laser focused on low-level systems programming development and also used in enterprise-wide application solutions. This breadth
of development is a compelling argument for .NET.

Visual Studio .Net is an Excellent Development IDE - Visual Studio .NET is a fine development environment. For the languages C#, Visual Basic, C, and C++ Visual Studio .NET is an excellent development and debugging environment. Several third-party vendors are also providing .NET versions of COBOL and Fortran. The CLR imposes some restrictions on these languages, but they are supported.

Applications Developed for .Net are Interchangeable on all Win32 Platforms - For the supported languages, the CLR supplies interchangeability across the Win32 platforms.

.Net Contains a RAD Platform - The Visual Studio .NET IDE nicely ties all the pieces together and has code generation capabilities. .NET could be called a pure programmer’s programming environment. It delivers exceptionally fine control over the smallest details by exposing them. 

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