TigerGraph DB - Application and Data, Data Stores, and Graph Database as a Service
RailModeller - RailModeller is a new application for creating model railroad and slot car layouts.
Azure Cosmos DB - NoSQL JSON database for rapid, iterative app development.
WinTrack - Track planing software
ArangoDB - A distributed open-source database with a flexible data model for documents, graphs, and key-values.
TrainCad - Freeware Microsoft Windows program for designing model railroad layouts using standard tracks.