Legacy System Modernization

Migration of legacy software (Visual Basic, FoxPro, Access) to Modern Web

Safeguard the accumulated business logic of your legacy software. We rewrite critical desktop management systems built in VB6, Visual FoxPro, Clipper, Delphi, or Access into modern cloud web architectures (React, Node.js, PostgreSQL) migrating data with zero downtime.

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Why Deepyze for your Legacy System Modernization?

We work with industry best practices to guarantee real results.

Complete preservation of business rules

We audit original codebases to extract every calculation, validation rule, and edge case accumulated over decades. No operational knowledge gets lost in translation.

Zero-loss historical data migration

We convert obsolete database files (DBF, MDB, legacy flat files) into modern relational schemas in PostgreSQL, cleansing and normalizing historical records.

Anywhere web & mobile accessibility

Break free from local Windows workstations locked to local networks. Staff can now securely log in from web browsers, Macs, tablets, and phones.

Modern stack: React, Node.js & PostgreSQL

Engineered using resilient cloud architectures, ensuring blazingly fast response times, modular clean code, comprehensive documentation, and effortless future upgrades.

Say goodbye to FoxPro & Access 2GB file caps

Eliminate constant dread over corrupted table indexes, multi-user file lock crashes, and file size limits that threaten business continuity.

Phased rollout via Strangler Fig pattern

We deploy module by module while maintaining real-time bidirectional synchronization between old and new systems, guaranteeing zero operational downtime.

How we build your Legacy System Modernization

A clear and transparent method so you always know which stage your project is at.

1

Reverse engineering & legacy audit

We analyze existing source code (VB6, FoxPro, Delphi, Access macros), map actual operational workflows, and inspect legacy table schemas.

2

Modern architecture & UX design

We model a normalized PostgreSQL database and design an intuitive web user experience that feels familiar to your long-time operators.

3

Modular development & parallel testing

We build the solution incrementally, running parallel simulations comparing legacy and modern system outputs until reaching 100% parity.

4

Cutover migration & legacy sunset

We run final data extraction scripts during a planned maintenance window, train your workforce, and decommission the old legacy systems.

Frequently asked questions about Legacy System Modernization

Everything you need to know before starting

Yes, absolutely. We apply an incremental migration methodology (Strangler Fig pattern) using bidirectional synchronization. Your team continues operating as usual while modern web modules are phased in gradually.
Modernizing a scoped Access system or specific operational modules starts at USD 5,500. Comprehensive enterprise ERP systems built in Visual FoxPro, VB6, or Delphi with decades of data start from USD 9,000.
This is the reality in more than 80% of our projects. Our senior engineers reverse engineer the original source code, forms, and database files directly to document and replicate every operational rule.
We engineer high-performance web frontends with React / Next.js, robust backends in Node.js / TypeScript with clean REST APIs, and relational PostgreSQL databases deployed in secure cloud VPCs (AWS, Azure, or private servers).
Yes. We reproduce all accounting reports, fiscal ledgers, and official documents into high-definition vector PDFs, ready for instant preview, download, or direct printer dispatch.
Not a single record is lost. We craft robust ETL scripts that sanitize, validate relational foreign keys, fix corruption, and import complete historical records into the new relational database.

Productos que construimos

No es teoría: es software propio en producción

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Precio fijo en USD

Cotizamos con alcance cerrado en dólares. Sabés cuánto cuesta desde el día uno, sin sorpresas.

El código es 100% tuyo

Al finalizar, el repositorio, la infraestructura y la documentación quedan completamente a tu nombre.

Mismo huso horario

Trabajamos en horario de negocio de Sudamérica. Reuniones y respuestas sin delays por diferencia horaria.

Propuesta en 24-48 h

Después de la primera reunión recibís una propuesta detallada por escrito, sin compromiso ni letra chica.

Damián Oliva, fundador de Deepyze

Damián Oliva

Fundador de Deepyze

Trabajás directo con quien construye. Años desarrollando productos digitales en LATAM, certificado en Google Cloud Machine Learning.

Conocer al fundador
★★★★★

Ready to start your Legacy System Modernization project?

Tell us your idea and we'll prepare a no-commitment proposal in 24 hours.

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