* [GOV.UK Prototype Kit v13.19.1](https://github.com/alphagov/govuk-prototype-kit) – Rapidly create interactive HTML prototypes that mimic GOV.UK service pages.

* [Schemio v0.30.2](https://github.com/ishubin/schemio) – Web-based diagramming app for creating interactive and component-based diagrams with animation and event handling.