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Rungs.dev

Design, simulate, and test PLC programs in the browser with Ladder Logic and Structured Text editors, tag management, real-time simulation, test runner, and trend analysis.

rungs.devEducationFeb 2026IrelandTechsolid Automation Limited

A browser-based PLC programming simulator that lets users design, simulate, and test Ladder Logic and Structured Text programs without installing heavy software. It targets engineers, developers, and students who need an accessible, affordable way to learn, prototype, or verify control logic. The platform differentiates with an AI assistant that reads the actual project code, integrated testing, and version-friendly plain-text files.

Key features

  • Ladder Logic editor with drag-and-drop
  • Structured Text editor with syntax highlighting
  • Tag management with data types
  • Real-time simulation with step control
  • Integrated test runner for Add-On Instructions
  • Trend charts for tag values
  • AI assistant reads actual project code
  • Plain-text file format for version control
  • No social media activity within the last 30 days
GTM channels
  • Blog
  • Community
  • Docs
ICP
  • Engineering teams
  • Software developers
  • Students