What are some alternatives?
When comparing Terrastruct and Diagrams for Mac, you can also consider the following products
SnapUp - Wireframe faster / create amazing user interfaces
Page Flows - User flow design inspiration for mobile & desktop
Plectica - Easily diagram anything, together
UX Flow Wireframe Prototyping System - Create beautiful user flows prototypes for your next project
Whimsical Wireframes - Lightning fast wireframing with real-time collaboration.
DBDiagram.io - Free database diagrams designer for analysts & developers 🛠