Now supporting RPGLE, COBOL & CLLE

Uncover the intelligence hidden in legacy systems

Archeon helps teams understand, document, assess and modernize legacy applications — from RPGLE and COBOL to CLLE and SQL.

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No credit card required

Instant results

CUSTPROC.RPGLE

D CustomerRec DS

D CustID 10A

D CustName 50A

D Balance 9P 2

D Status 1A

C READ CUSTFILE CustRec

C DOW NOT %EOF(CUSTFILE)

C IF Status = 'A'

C EXSR ProcessCust

C END

C READ CUSTFILE CustRec

C ENDDO

AI Explanation

This RPG program reads customer records sequentially, processing only active customers (Status = 'A') via the ProcessCust subroutine.

Why Archeon

Understand a 1,500-line RPG program in 30 seconds — instead of 3 days

Built for IBM i first. Designed for legacy systems everywhere.

Archeon was built by IBM i experts who have spent years maintaining RPGLE, COBOL and CL in production — and engineered so the same approach extends to legacy systems beyond the platform. It is not a generic code assistant retrofitted for legacy work; every prompt, every modernization rule and every risk check is grounded in real production conventions, not boilerplate.

30 sec

to explain a program that would take a new hire days to trace manually.

IBM i languages supported: RPGLE, RPG, COBOL, CLLE, DDS and SQL.

generic boilerplate — every answer is grounded in real IBM i conventions.

Everything you need to tame legacy code

Five powerful AI actions that turn cryptic legacy code into clear, actionable insights.

Explain this code

Get a plain-English explanation of what any code block does, line by line or as a whole.

Generate documentation

Auto-generate structured documentation with inputs, outputs, logic flow, and business rules.

Find risks

Identify potential bugs, security issues, deprecated patterns, and maintenance risks.

PRO

Suggest modern equivalent

Get recommendations for modernizing to free-format RPG, Java, or other modern languages.

PRO

Convert to REST API

Paste a legacy screen program (display file + RPG logic) and get a complete REST API specification — endpoint, JSON payloads, and implementation notes. Turn your green screen into a modern web service.

Built for IBM i developers

Decades of legacy code don't have to be a black box. Archeon understands the nuances of each language — from RPG fixed-format quirks to COBOL division structure.

RPGLE

RPG IV / ILE RPG — fixed and free format, cycle programs, service programs

Most common

COBOL

IBM i COBOL — divisions, paragraphs, data definitions and procedure division

CLLE

CL programs — job control, commands, variable handling, procedure calls

Other

RPG/400, DDS, SQL/RPG, and other IBM i code variants

How it works

Paste your code

Drop in any RPGLE, COBOL, or CLLE snippet — from a few lines to an entire program.

Select language & action

Choose the language and what you want: explanation, docs, risk analysis, or modernization.

Get instant insights

AI analyzes your code and returns structured, actionable results in seconds.

Ready to lift your legacy?

Start understanding, documenting, and modernizing your IBM i code today. No setup required.

Try Archeon free

Simple, transparent pricing

Start free, upgrade when you need unlimited analyses and the modernization tools.

Free

€0

forever

10 analyses / month
Explain, Document, Find Risks
All 6 IBM i languages

Get started