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The living knowledge platform

Your code.
Understood.

Decades of business knowledge, hiding in plain sight. Replai brings it to life so you can understand your systems, change with confidence, and build what comes next.

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Your knowledge. Your environment. Your control.
COBOL · Oracle Forms · Java · .NET + more
Made for mission-critical.
Built for your next chapter.
Banking
Insurance
Enterprise
System integrators

What Replai Actually Does

Most legacy systems carry decades of business logic that nobody fully understands anymore. The original developers are gone, the documentation is incomplete, and making changes feels risky.

Replai reads your existing code - COBOL, Oracle Forms, PL/I, and others - and builds a structured map of what the system actually does: the business rules, the workflows, the dependencies between components. Your team can then ask plain-language questions about that code, trace how changes will ripple through the system, and plan modernization work without guessing.

The result is a team that can safely extend, refactor, or migrate legacy systems without needing someone who remembers how things were built 30 years ago.

Meet your living knowledge base

A clearer picture.
A smarter next move.

From a question about one field to a plan for your entire estate. It starts with understanding.

Your work. A connected view.

See what needs your attention, pick up a conversation, and follow work in progress. A shared starting point for understanding and modernizing your systems.

Explore the possibilities
Replai / Workspace
Questions, decisions, and progress in one workspacePrototype · Sample data
Understanding changes everything

Beyond translation.
Into business meaning.

A line-by-line rewrite carries the past forward. A semantic knowledge layer gives you the understanding to choose a better future.

A closer look
01 / Your systems

Start with the source

  • Source code
  • Metadata
  • Dependencies
Across your existing stack
02 / Analysis agents

Recover the meaning

  • Read structure
  • Recover rules
  • Map relationships
Specialized analysis, working together
03 / Replai

Living knowledge

Rules, workflows, and relationships.
Connected to their source.

One shared semantic layer
04 / Your team

Put it to work

  • Ask & explore
  • Trace impact
  • Plan & modernize
Human judgment stays in the loop
From code to context

A conceptual view of how Replai turns technical detail into knowledge your team can use.

Recover the why. Connect technical components to their business purpose.

Keep your options open. Rebuild in the architecture and technology that fit your future.

Make knowledge usable. Give developers, architects, and business teams a shared view.

Where clarity becomes progress

Big questions.
Practical answers.

All solutions
01
Business understanding

Understand the undocumented.

Recover lost metadata and make unfamiliar business logic accessible to your team.

02
Change & risk

Follow the impact.

Trace data lineage and dependencies before changing a field, a formula, or an entire workflow.

03
Compliance & audit

Make your evidence visible.

Explore rules and source context to support audit and regulatory reviews.

04
Modernization

Modernize on your terms.

Plan and execute migration with business intent, not just syntax, as your foundation.

Search Across Your Entire Legacy Codebase

Replai's searchable dependency graph lets teams find specific components, trace data flows, and map relationships across millions of lines of COBOL, Oracle Forms, or other legacy code. Type a field name, a program identifier, or a business term and see every component that touches it. Follow a data flow from an Oracle Forms screen through its PL/SQL procedures to the underlying tables. Understand how a change in one COBOL module ripples through the rest of the system before anyone touches a line of code.

Supported languages & platforms

Different languages.
One understanding.

COBOL to Java. Oracle Forms to .NET. Bring the knowledge in your existing systems into one connected view.

12 of 12 supported technologies

  • COBOLMainframe applications
  • Oracle Forms4GL enterprise applications
  • JavaEnterprise applications
  • PL/IIBM mainframe programming
  • .NETMicrosoft application framework
  • Oracle APEXLow-code application platform
  • NaturalSoftware AG applications
  • DelphiObject Pascal development
  • PowerBuilderDesktop application systems
  • REXXIBM scripting language
  • IBM RPGIBM AS/400 applications
  • CA 2E / SynonApplication development environment

Have a specific version, dialect, or mixed-language estate?

Let’s talk about your stack
Enterprise by design

Your most important code.
In safe hands.

Mission-critical knowledge deserves an environment you control. Replai supports on-premises and private-cloud deployment, with encryption, access controls, and audit logging.

On-premises or private cloudRole-based accessData isolation & audit trails
Visit our trust center
For system integrators

Less archaeology.
More forward motion.

Build a repeatable modernization practice. Bring clarity to discovery, confidence to estimates, and shared understanding to delivery.

Build with Replai
Your next chapter

There’s more in
your code. Let’s find it.

See Replai in action