Four Js

Mission Critical. AI Enabled.

Mission-critical systems.
Future-proofed.

Modernize the Informix-4GL applications you've trusted for decades — new interfaces, any device, AI built in. No rewrite.

Zero rewrite
Any device
Trusted for decades

Built for the applications that can never go down

30+
Years of experience
20+
Markets served
100%
Mission-critical focus
TramontinaTylerCivicaISSSTESBSSiemens HealthineersSkechersVersatermBBCAT&TSociété GénéraleAcerCVS

What we do

Five ways to future-proof
what your business runs on.

One platform, five outcomes — modernize, reimagine, accelerate, operate and report, from a single partner.

Genero

Keep your business logic. Modernize everything around it — recompile, don't rewrite.

Zero rewriteKeep your logic
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One backend, every frontend. A modern, bespoke UI on your existing Genero core.

Any frontendNo BDL change
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AI that understands Genero — Intelligence never receives your code.

Private by designIn your tools
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See everything your apps do — without changing your code.

Real-timeNo code change
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High-volume reporting on any app — Java, .NET, PHP, BDL. Factur-X ready.

Any stackFactur-X
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One platform

Everything you need, from one partner

One codebase, every device. Modernize, extend, operate and report on your business-critical applications — without stitching together a dozen vendors.

Explore the platform
01

One codebase

Build once, then run on desktop, web and mobile — the same application everywhere.

02

Multi-OS

Run the same source on Windows, Linux and Unix — no code changes.

03

Database freedom

Informix, PostgreSQL, Oracle, SQL Server or MySQL — the same source code, your choice.

04

Cloud-ready

Deploy on-premises or on any major cloud — the same source code, no rewrite.

05

Step by step

Modernize module by module — keep your business logic, and keep shipping.

06

Open standards

OpenTelemetry and typed REST APIs — integrate with everything else, no lock-in.

AI Enabled

Put AI to work — safely

Give your teams AI that understands your Genero applications — accelerating how you build them, while your code and data stay under your control.

  • Works inside the tools you already use (Genero Studio, VS Code, Cursor, Claude Code)
  • Grounded in official Genero knowledge, not the public internet
  • Intelligence never receives your code
10×

more accurate, idiomatic Genero code

6.5×

lower cost per answer

Four Js internal benchmark, 100+ tests (AI agent + web search vs. AI agent + Genero Intelligence).

Private by design — Genero Intelligence never receives your code.

Design-time AI (Genero Intelligence, in your IDE) is separate from run-time AI-agent access (via Genero Arc) — neither exposes your production BDL source.

ai assistant · private connected
$ genero mcp connect
 authorized · Intelligence never receives your code

 expose getClaim() as a REST service
  generating typed wrapper + OpenAPI…

FUNCTION getClaim(id INT) RETURNS Claim
  -- GET /api/claims/:id  ✓ documented
Genero StudioVS CodeCursorClaude Code

Customer stories

We do not spend as much time on low-level programming and Genero allows our developers to write functionality focused on our clients.

Alan Wilson, CTO

Versaterm · Public Safety

Public Safety

Versaterm