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• Entity Framework Core
  For handling data in an easy, code first approach

• MediatR
  For handling messaging internally when the different areas of the code need to communicate

• Fluent Validation
  Rule and data validation engine for the backend / API

• Automapper
  For mapping object in the code, to not do it manually, it also offers object property filtering and transformation in an easier way than writing it from scratch

• Serilog
  In the core election code, this is used for capturing errors and formatting them correctly.
  In OS2Valghalla 3.0 we will extend it to also capture other events.

• RabbitMQ
  Queue library for use in different scenarios where it would be necessary to have a queue, like sending digital post and automatically updating participant core data.

• MassTransit
  Is to RabbitMQ layer what MediatR is for the database layer, an abstraction layer to easier code against RabbitMQ.
  It supports multiple queue solutions so is should be easier to replace RabbitMQ in the future is that is what is required.

Frontend

• Angular
  Selected Frontend JavaScript library

• Angular Material
  Components and visualization library for Angular.

• SubSink
  Sbuscription framework to handle subscription (create, remove, change) on controls, components, elements, variable etc.
  With an easy model to register and unregister subscriptions.

• Transloco
  Framework for handling languages in the solution

• Observable store
  Frontend state framework that can be used with SubSink to make powerful state aware solutions

• Tailwind CSS
  Used where Angular materials lack sufficient control or is difficult to work with.

• designsystem.dk
  Danish HTML, CSS and JavaScript framework targeted public (government, municipal or other public institutions) systems
  We will primarily be using the CSS.

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