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.
Illustrative demo
An example of what we can build
Illustrative demo with sample data: it is not a ready-made product. We build each system to fit your operation, and the modules, rules and integrations are defined in the discovery phase.
Metodología de Migración en Paralelo (Cero Riesgo de Frenos Operativos)
Conectamos un agente liviano a tu base de datos vieja (SQL, Access, FoxPro). Cada venta se replica en la nube sin tocar tu software actual.
Tu equipo prueba el nuevo sistema en paralelo. Se cotejan saldos, facturas y stock al centavo hasta tener 100% de confianza.
Se hace el switch final un fin de semana. El lunes la empresa arranca 100% en la nube sin perder un solo comprobante histórico.
Benefits
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.
Process
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.
Pricing
How much does it cost?
It depends on the scope: we define it together in a free discovery meeting and send you a fixed-price proposal.
FAQ
Frequently asked questions about Legacy System Modernization
Is it possible to migrate without halting our daily business operations?
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.
How much does a legacy to web modernization project cost?
It depends on the scope: we define it together in a free discovery meeting and send you a fixed-price proposal.
What if we have no technical documentation and no contact with the original developer?
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.
What modern technologies are used for the new application?
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).
Can we preserve our existing reporting and document printouts?
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.
Will we lose decades of historical data stored in DBF or Access files?
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.
Products we built
Our own software, running in production
- Fixed price
- We quote with closed scope and price. You know what it costs from day one, no surprises.
- The code is 100% yours
- When we finish, the repository, the infrastructure and the documentation are entirely in your name.
- Same time zone
- We work South American business hours. Meetings and answers with no time-zone delays.
- Proposal in 24-48 h
- After the first meeting you get a detailed written proposal, with no commitment and no fine print.
Damián Oliva
Founder of Deepyze
You work directly with the person who builds. Years building digital products in LATAM, Google Cloud Machine Learning certified.
Meet the founderReady to start your Legacy System Modernization project?
Tell us your idea and we'll prepare a no-commitment proposal in 24 hours.