Did you lose your original 4GL/ABL source code and you have only R-code copy? Here is possibility recover your source partially or completely back. About 60-100% information can be recovered from RCode. Now are supported all common PROGRESS version: v6, v7, v8, v9, v10 (32bit + 64bit), v11 & v12. Source is not identical with original one. Decompiler isn't available for download and currently it's working as paid service.

Please remember that recovering of applications that you are not the lawful copyright holder is strictly prohibited. You may use this service to recover only your own applications for which you are the copyright holder.

Progress Software Corporation does not endorse, approve or certify the information provided on this Website.


  • Price is about 10 EUR/~15 USD per file, but it depend on quantity
  • If you have more files there is discount and price get down (up to 1 EUR/2 USD per file for huge pack)

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Compare decompiled vs original:

Download recovered example 31 KB (zip)

Decompiler is NOT available for download (paid service)

Current version 2024.1 - [01.01.2024]

What's new in this release:


  • Added new statements: 1 (V11)
  • Added new expressions: 2 (V11,V12)
  • Added support for Publish(), Subscribe(), Unsubscribe()
  • Added support for class variable types recovery
  • Added class function types (METHOD, PROPERTY to output)
  • Added Prototype Declarations to main output
  • Update on GUI function details after first decompile
  • Beautify some function parameters (ExternFun, ProcPrototype)
  • Hex colors tweaked based on normal/dark theme and fore/back color type (much better for eyes)
  • Upon the first viewing, if any errors are detected, jump to them


  • Updated statements: 2 (V12)
  • Updated expressions: 1 (V12)
  • For class element references show also type references
  • Updated PROGRESS Decompiler Addon - Df2Dbf v2.22 (fixed index CRC, bad index fields when exists description)
  • Updated PROGRESS Decompiler Addon - SigMaker v2.00 (rewritten to .NET)
  • Expression databases revisited and rebuilded
  • Better variable type check (support for class types)
  • Less debug detail on the GUI
  • Better Flags processing
  • Better directory sorting
  • Expression processing rewritten (V10)
  • Header info processing logic changed
  • Better Header info assigning (same names)
  • Big recoding for V6 (also some structures added..)
  • Lot of small fixes + heavy heavy code refactoring


  • Don't show CRC warnings for converted database files (output from Df2Dbf)
  • Fixed broken support for V6
  • Fixed bad global variable parsing (V6)
  • Load some internal static databases once on the beginning (not for each rcode)

See whole history 18 KB (txt)

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