New release Cobos 5.3!

Cobos: DevOps and Open Source best practices for your mainframe


Cobos is a Software Development Environment (SDE) based on Eclipse, the famous open source java development platform.

Cobos helps you modernize and improve the productivity of app development in mainframe environments IBM z/OS, IBM i, UNIX and AIX.

Designed as a software factory, Cobos provides efficient tools for code modernization and refactoring:

  • Editor
  • Navigator
  • Parser
  • Emulator
  • Web Generator and Designer

Discover Cobos features


Cobos 5.3: yet more features to modernize IBM i application development

Cobos 5.3 is avalable since 1st September 2022 with yet more features for easy app development in mainframe environments.
  •  new 5250 Terminal to better operate your IBM i, also available in Japanese!

Cobos japanese terminal

  • updated WebGenerator and WebDesigner: bye bye green screens, hello browsers!
  • better connection between Emulator and Traffic Player: record and replay your screens for easy testing. No need to be connected to the IBM i!
  • improved documentation for a quicker start and easier use of all Cobos great features
  • upgraded RPG Converter to convert more programs from column/fixed form RPG to free or full free RPG

Cobos RPG Converter


  • new Lock Optimist to avoid merge issues thanks to a pop-up window and a comparator
Cobos popup Lock Optimist
We’ll come later with more details on these new features. Stay tuned!

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