Vivantro
Vivantro
France · Tunisia

Legacy systems, migrated and live.

Eight working applications, each migrated from COBOL, Delphi or BizTalk to a modern stack by our team. Click any card to open the running system in your browser.

8 live demos ~35,500 source lines migrated 48 patterns covered 0 critical discordance unresolved

Live demosClick & try

Each application below was migrated end-to-end — source code, batch jobs, screens and integrations. The live target is hosted on Cloudflare Workers; the source comes from public references (AWS, IBM, Microsoft, DGFiP, open source).

CardDemo
COBOLCICS · VSAM

CardDemo — Credit card management

AWS Mainframe Modernization reference. Login, accounts, transactions and batch posting, migrated to TypeScript on Cloudflare.

Open the live system
7,650 linesRatio 7.4:1
CardDemo Extended
COBOLIMS · VSAM ESDS · JCL SORT

CardDemo Extended — Auth & user mgmt

Extension of CardDemo with IMS hierarchical DB, VSAM ESDS/RRDS, JCL SORT and additional security flows.

Open the live system
1,624 lines+5 patterns
CBSA
COBOLCICS · DB2

CBSA — Core banking

IBM CICS Banking Sample Application. Accounts, transfers, debit/credit, customers and audit, with SYNCPOINT ROLLBACK and ENQ/DEQ.

Open the live system
7,900 linesRatio 7.2:1
GenApp
COBOLCICS · DB2 CURSOR

GenApp — Insurance policy

IBM CICS GenApp. Policy inquiry with DB2 CURSOR SCROLL, customer add/update, motor and house policies, FK CASCADE delete.

Open the live system
3,211 linesRatio 3.8:1
DGFiP
COBOLSovereign · CeCILL

DGFiP — Sovereign tax calculator

French DGFiP property tax 2023 calculator (CeCILL v2.1). Bati and non-bati flows, communal rates, syndicate adjustments.

Open the live system
5,225 linesRatio 6.2:1
Raptor Invoice
DelphiVolga Tables · VCL

Raptor Invoice — Desktop invoicing

Norwegian Delphi 5+ desktop invoicing app. Full invoice cycle (draft → issue → payment), VAT computation, customer sales.

Open the live system
1,333 lines (POC scope)Delphi → TS
BizTalk Insurance
BizTalkXSD · Maps · Logic Apps

BizTalk — Insurance integration

Microsoft aimbiztalk samples reframed as insurance subscription + payment. Dual target: TypeScript and Logic Apps Standard.

Open the live system
~400 lines9 BizTalk patterns
Portfolio Management
COBOLVSAM · Batch

Portfolio — Asset management

Portfolio management system with 37 COBOL programs, 20 copybooks, batch sequencer and 9-tab dashboard.

Open the live system
7,972 linesRatio 10:1

Methodology

Each migration follows ATLAS — our internal cellule legacy methodology: 10 steps, 10 principles, fidelity audit baked into delivery. The public face of ATLAS is on GitHub.

Read on GitHub →

What we publish here

This subdomain hosts working migrations of public legacy code. For real engagements — your COBOL, your Delphi, your BizTalk — we work as a dedicated cell, not as a downloadable tool.

Talk to us

Tell us about the system you want to modernize. We come back with a scope, a team and a timeline.

France
Vivantro SAS
9 rue des Colonnes, 75002 Paris
vivantro.com
Tunisia
Access International
Immeuble Rosalys, Bloc B
Les Berges du Lac 2, 2035 Tunis
access-international.dev
Group
Founded 1999.
Franco-tunisian IT services group.
github.com/Vivantro