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R. J. Corman Mainline by RJ Corman Railroad Group, LLC



23+ iOS apps curated and reviewed
R. J. Corman Mainline is the household name in catenary, but it's far from the only option. We track 23+ alternatives and competitors on iOS — many free, many higher-rated than you'd expect.



Stay informed and connected with company news, events, and a directory of services. Engage in discussions and access multiple news sources within the railroad industry community.






This app provides a more accurate and efficient method for calculating the sagging of overhead transmission line conductors. It replaces traditional approximate parabolic equations with precise catenary expressions, saving time and improving accuracy.








This utility app provides riggers with quick access to specifications for ropes, hardware, and slings. It offers calculations for safe working loads, line sag, line on drums, and bridle configurations, supporting both US and metric units.


This app provides essential reference material for lineworkers, including detailed information, charts, and how-to guides on transformers, rigging, knots, and rope capacities. It features practical calculators and covers various electrical formulas and safety standards.


This tool helps determine the maximum allowable lengths for twisted-pair copper patch and horizontal cables in compliant Category 5e, 6, or 6A channels. It allows users to define cables, create multi-cable channels, and validates configurations, providing guidance on length adjustments.






This app assists European model railway builders by providing calculations based on NEM-Standards. It simplifies the process of designing and building model railways.


Easily calculate horizontal and vertical dimensions for diagonal railroad model track layouts. Input track length and angle to get precise measurements for combining different track pieces. Avoid guesswork and ensure accurate model railway construction.


This digital magazine provides in-depth coverage of track laying and maintenance machines. It features focus topics, global news, technology series, and event information. The app offers interactive multimedia content like videos and 3D visualizations.


This app connects rail industry professionals globally for an exhibition and technical conference. It showcases the latest technology, services, and research, alongside educational sessions.


Calculate the optimal amount of anchor chain or rope for secure anchoring based on vessel characteristics and sea conditions. Provides detailed load calculations and accounts for dynamic effects like swell and gusts. Supports both metric and imperial units, with options for chain-only or mixed rope/chain setups.








Experience the groundbreaking 1971 arcade classic reimagined for mobile. Pilot your ship through escalating enemy waves, collect power-ups, and aim for the top of the global leaderboards. This faithful recreation offers authentic controls and sound design for an immersive retro gaming experience.





