What GDK Software does

GDK Software is a privately held, Netherlands-headquartered consultancy specializing in Delphi (Object Pascal) software development, upgrades, and AI integration. Founded circa 2006 and led by Director Marco Geuze alongside a small named leadership team, the company operates regional offices in Papendrecht (NL), Orpington (UK), San Jose and Boise (USA), and Brazil, serving enterprise and mid-market clients worldwide. Its primary service lines are custom Delphi application development, legacy Delphi migration (handling codebases from 25,000 to 2.5M+ lines, including upgrades from Delphi 5/6/7/2009 to current versions such as Delphi 12 and 13.1), ongoing maintenance and capacity augmentation, and a dedicated Delphi AI consultancy practice. Core proprietary technology centers on GDK Duster, a compiler-driven automated migration tool with 500+ pre-defined upgrade solutions that materially reduces the labor cost of large conversions, complemented by two product sub-brands (Codolex low-code platform and Codolex.AI) and a public GitHub portfolio of six open-source Delphi libraries spanning JavaScript interpretation, OOXML I/O, Microsoft Graph integration, LLM token optimization, Model Context Protocol servers, and IDE tooling.

The company monetizes primarily through scoped, project-based professional-services engagements on multi-year contracts, sold via a sales-led, field-engagement GTM that initiates with a three-day 'quick scan' analysis and concludes with individually quoted project plans. Go-to-market is direct (no resellers or channel partners), driven by SEO across four language sites, an extensive Delphi knowledge base, named case studies, and community presence through open-source publishing. Strategic positioning rests on being a pure-play Delphi specialist in a market where qualified talent is scarce, supported by an official Embarcadero Technology Partner designation. Customer base is small but diversified across verticals including construction materials (Holcim/Humes), agribusiness (Senwes), agricultural cooperatives (Point Four, New Zealand cooperative), and hospitality/education (Horeca Stichting Nederland).

Name

GDK Software

Legal name

GDK Software

Website

https://gdksoftware.com

Company type

Private

Founded year

2006

Operating status

Operating

Headcount range

11–50 employees

Short description

GDK Software is a Netherlands-headquartered Delphi/Object Pascal consultancy serving enterprises worldwide with legacy application migrations, custom development, AI integration, and maintenance, supported by proprietary tooling and offices in Europe, the UK, the USA, and Brazil.

Ownership category

akta.pro rank

Product category

Software Development Services

NAICS

Custom Computer Programming Services (541511), Educational Support Services (61171)

SIC

Services-Computer Programming Services (7371)

akta.pro primary industry

Low-Code/No-Code Application Platforms (HDAEAKAA)

akta.pro secondary industries

Software Development (Programming, Frameworks, Dev Tools) (EDABAFAA), Platform Engineering & Internal Developer Platforms (IDP) (BPAEAKAC)

Keywords

• Delphi development services
• Legacy application migration
• Object Pascal consulting
• Software modernization services
• Low-code development platform

Headquarters

HQ city

Papendrecht

HQ country

Netherlands

HQ region

Europe

Offices4 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Technology or R&D, Operations, Marketing or Sales, Infrastructure

Revenue model

1. Professional Services — Delphi Development: GDK Software provides custom Delphi application development services. Clients engage GDK for capacity (contract developers), project-based development, and ongoing maintenance of Delphi applications. Revenue is generated on a project/engagement basis, typically scoped and quoted individually.
2. Professional Services — Delphi Upgrades: The company performs legacy Delphi migration projects, converting applications from old versions (e.g., Delphi 5, 7, 2009) to latest versions (Delphi 12, 13). Projects range from 25,000 to over 2,500,000 lines of code. Pricing is engagement-based, with an initial analysis scan (3-day turnaround) followed by a tailored quote.
3. Delphi AI Consultancy: Advisory and implementation services around AI integration in Delphi applications, leveraging GDK's own Codolex.AI platform and the company's open-source AI libraries (JavaScript4D, Microsoft365-4D, Toon4D, Delphi MCP Server).
4. Codolex Low-Code Platform: GDK offers its own low-code platform, Codolex, as an alternative or complement to Delphi development. Revenue from this platform is likely subscription or licensing based, though specific terms are not publicly disclosed.

Pricing tiers

Go-to-market motion2 records

Distribution channels1 record

Marketing channels5 records

Core offering

GDK Software is a specialized Delphi (Object Pascal) consultancy that delivers professional software development services for enterprise and mid-market clients. Core offerings include custom Delphi application development, legacy Delphi upgrade and migration projects (using the proprietary GDK Duster automated conversion tool), ongoing maintenance and support, Delphi-focused AI consultancy, and the Codolex low-code and Codolex.AI platforms as alternatives to traditional Delphi coding.

Product overview

GDK Software is a specialized Delphi development services company operating as a unified services firm rather than a software product vendor. The core offering consists of professional Delphi development services, Delphi application upgrades/migrations, and Delphi AI consultancy. GDK also maintains two sub-brands: Codolex Low-Code (a modern low-code alternative) and Codolex.AI (an AI-powered web platform built in Delphi). Supporting these services, GDK has developed internal tools including the GDK Duster automated migration tool, and has open-sourced several Delphi libraries including JavaScript4D (JavaScript interpreter), OfficeXML4D (Office file handling), Microsoft365-4D (Graph API client), Toon4D (token optimization), Delphi MCP Server (AI protocol integration), and ToolsAPI-helper (IDE extension framework). All offerings center on Delphi/Pascal development expertise.

Differentiator

Problem solved

Functional benefit

Brands

• Codolex: Low-code development platform for rapid application development
• Codolex.AI
• GDK Duster

Products and services

• Delphi Development Services Professional Delphi application development services for enterprise and mid-market organizations, including capacity (contract developers), maintenance, complex issue resolution, developer training, code quality assessment, architecture improvement, and application modernization for Windows, macOS, iOS, Android, and Linux platforms.
• Delphi Upgrades and Updates Migration and upgrade services for legacy Delphi applications, moving codebases (ranging from 25,000 to over 2,500,000 lines) from older versions (e.g., Delphi 5, 6, 7, 2009) to the latest Delphi releases (Delphi 12, 13.1 Florence), supported by the proprietary GDK Duster automated conversion tool with 500+ pre-defined upgrade solutions.
• Delphi AI Consultancy Advisory and implementation services focused on integrating AI capabilities and modern AI protocols (including Model Context Protocol / MCP) into existing Delphi applications, leveraging GDK's open-source AI libraries (JavaScript4D, Microsoft365-4D, Toon4D, Delphi MCP Server) and the Codolex.AI platform.
• Codolex Low-Code Platform A low-code development platform built for rapid application development as an alternative to traditional Delphi programming, connected to Codolex.AI for AI-enhanced development capabilities.
• Codolex.AI Platform An AI-powered web application platform built entirely in Delphi, demonstrating Delphi's capabilities for modern web applications and AI integration. Serves as both a product offering and a proof point for GDK's Delphi expertise.

Quantifiable outcome

• Initial analysis (quick scan) delivered within 3 business days
• +3 more outcomes

Named customers5 records

Segments1 record

Ideal customer profiles1 record

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature8 records

Partnerships

One partnership is on record.

• Embarcadero TechnologiescoreTechnology or IntegrationEmbarcadero is the creator and vendor of Delphi/RAD Studio, the core technology platform around which GDK Software's entire business is built. GDK is an official Embarcadero Technology Partner. The relationship is mutual: GDK depends on Embarcadero's platform and tools, while GDK drives Delphi adoption and migration services that expand Embarcadero's installed base.

Scale indicators5 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• Steema Software: Developer of TeeChart and other charting/data-visualization components for Delphi. Comparable as a Delphi-ecosystem specialist selling proprietary developer tooling into the same installed base.
• Woll2Woll Software: Delphi component and grid/UI library vendor serving the same Delphi professional developer audience. Comparable as a niche specialist monetizing the Delphi ecosystem with proprietary tooling.
• TMS Software: Long-standing vendor of Delphi components, IDE tools, and frameworks used by the same Delphi developer audience GDK serves. Comparable because both firms monetize the installed base of Delphi developers with deep, Delphi-specific tooling expertise.
• SoftwareMining: Specialist in legacy code translation, including Delphi to .NET/Java migrations. Directly competes with GDK on enterprise migration engagements for legacy code bases.
• Atozed Software: Developer of IntraWeb, a Delphi-based web framework. Comparable as a Delphi-only specialist serving the same narrow developer audience with proprietary tooling.
• WinSoft: Vendor of specialized Delphi components and libraries. Comparable as a small, niche software firm whose entire catalog targets Delphi developers.
• FastReport: Reporting and document-generation tools for Delphi, VCL, and FMX. Comparable as a niche vendor whose entire product line is built around Delphi/Object Pascal developers.

Broad incumbents

• Mendix (Siemens): Enterprise low-code platform now owned by Siemens. Comparable to Codolex as a competing low-code platform targeting enterprises that might otherwise rely on Delphi consultancies for custom application delivery.
• OutSystems: Established low-code application platform. Comparable as a competitor to GDK's Codolex low-code sub-brand in the enterprise rapid-application-development space, particularly for customers evaluating low-code as an alternative to legacy modernization.
• Embarcadero Technologies (Idera): Vendor of Delphi/RAD Studio and the platform on which all of GDK's services depend. Embarcadero is GDK's official technology partner; comparable as the parent of the Delphi ecosystem and the indirect anchor of the entire market GDK serves.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• GitHubgithub.com/GDKsoftware
• LinkedInlinkedin.com/company/gdksoftware
• Xx.com/gdksoftware
• Facebookfacebook.com/GDK-Software-100078022197527

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about GDK Software