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Best Eclipse 4diac IDE alternatives in 2026

Eclipse 4diac IDE is open-source IEC 61499 IDE for distributed automation systems. These 5 alternatives come from the same rankings, ordered by editorial score. Connected products carry a small, disclosed lift.

5 alternatives From best PLC programming software How we rank

Ranked alternatives

  1. 1

    CODESYS Development System

    All five IEC 61131-3 editors and object-oriented programming in one Windows development system, with a runtime set up on each target device. Full licenses use a hardware dongle.

    Best for Multi-vendor IEC 61131-3 controller projects

    WindowsFree plan, paid upgrades

    92.5score
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  2. 2

    TwinCAT 3

    PC-based real-time control with IEC 61131-3 plus C/C++ and MATLAB, and free core PLC engineering. Runtime licenses are priced by control performance, and the tool runs on Windows.

    Best for PC-based control with a free engineering tier

    WindowsFree plan, paid upgrades

    90.0score
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  3. 3

    Beremiz

    Open IEC 61131-3 editors that compile to C and then native code, targeting any processor. Windows and Linux builds are published, and the install details live in the repository.

    Best for Open IEC 61131-3 work on any processor

    WindowsLinuxFree and open sourceOpen source

    82.0score
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  4. 4

    OpenPLC Editor

    Open-source IDE for the OpenPLC Runtime, with builds for Windows, macOS and Linux on x64 and ARM64. The runtime repository was archived in April 2026, and the editor's language support is not stated.

    Best for Open-source PLC programming on three desktops

    WindowsmacOSLinuxFree and open sourceOpen source

    81.0score
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  5. 5

    LOGO! Soft Comfort

    Logic programming, web visualization and simulation for LOGO! modules on Windows, macOS and Linux. It targets LOGO! controllers only and is licensed per workstation, with a free demo for offline engineering.

    Best for Compact LOGO! logic module projects

    WindowsmacOSLinuxPaid

    77.5score
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About Eclipse 4diac IDE alternatives

What is the best alternative to Eclipse 4diac IDE?
On listme.name the highest-scored alternative is CODESYS Development System, followed by TwinCAT 3. The right choice depends on price, platform and whether you need open source.
Is there a free alternative to Eclipse 4diac IDE?
Yes. Free options include CODESYS Development System, TwinCAT 3, Beremiz.