TRAX - Trax is a free web-based tool for planning your model railroad
SCARM - Simple Computer Aided Railway Modeller
RailModeller - RailModeller is a new application for creating model railroad and slot car layouts.
Radio Silence - Radio Silence is a network monitor and firewall for the macOS. The software stops apps from making network connections. The firewall runs in the background and does not require an open window.
Virtuoso - Virtuoso app enables you to practice and keep a record of your learning activities to build custom lessons.
Escape - Track all your unnecessary trips to distracting websites