Shinydashboard:
Purpose: Simplified framework on top of Shiny.
Use Case: Ideal for creating dashboards.
Features: Provides a structured layout with a sidebar and body.
Note: Still built on Shiny, but reduces reactive programming complexity.

Flexdashboard:
Purpose: Creates dashboards using R Markdown.
User-Friendly: Requires less code compared to traditional Shiny apps.
Note: Uses R Markdown, making it more accessible and straightforward.

{shinymeta}:
Purpose: Simplifies Shiny app creation.
Approach: Allows app layout description in a simple configuration file.
Note: Designed to streamline Shiny app development.