Despite the name, there is no actual monorail.
There never was.
This is mostly about software.
Cambridge Monorail is a collection of experiments, prototypes, and occasionally quite serious software exploring modern web development, developer experience, and the strange borderlands between UI, UX, and engineering.
WallRun – Open source workspace for building custom digital signage with React and BrightSign-ready deployment tooling
A developer-first workspace for treating signage as software: fixed-aspect React layouts, signage-focused components, BrightSign deployment workflows, and documentation aimed at frontend engineers building screens that live in physical space.
Most of the work here circles a few recurring themes:
Architecture & Scale
How do teams build software for fixed canvases, devices, and always-on displays without the tooling collapsing into a CMS-shaped compromise?
Developer Experience
What does good DX look like when the target is a wall-mounted screen instead of a browser tab?
AI-Assisted Development
How can AI tools help without quietly taking the steering wheel?
Design Meets Engineering
Where do typography, motion, accessibility, deployment constraints, and engineering decisions actually collide?
Digital Signage Systems
WallRun: a React-first signage workspace with fixed-aspect layouts, component libraries, deployment tooling, and live examples
UI/UX Prototypes
Design explorations built for real screens, real viewing distance, and an unhealthy attention to detail
AI Workflows
Experiments with AI-assisted development that keep humans in charge and useful in the real world
Design Systems & A11y
Accessibility-first component libraries, deterministic layouts, and design tokens that actually work
Opinionated Examples
Usually written because something else felt wrong
Some repositories are polished.
Others are unapologetically rough.
Both are intentional.
✦ Clarity over cleverness – especially when cleverness is tempting
✦ Design is a system – not a coat of paint
✦ Accessibility is a baseline – not a stretch goal
✦ AI removes friction – not responsibility
✦ Software should fit the medium – including the ones bolted to walls
If something here helps you, steal it.
If it breaks, fix it.
If it makes you disagree, excellent.
Everything here is open source unless otherwise noted. Contributions, issues, and discussions are welcome. The organization is active and evolving—projects may change direction, be archived, or quietly wander off once the question they were asking has been answered.
Built in Cambridge. Questioned everywhere.