What are some alternatives?
When comparing Terrastruct and User Onboarding, you can also consider the following products
SnapUp - Wireframe faster / create amazing user interfaces
UserGuiding - UserGuiding - Better User Onboarding Without Coding
Plectica - Easily diagram anything, together
HelpHero - The onboarding & help experience your users deserve. 🤔👉💡
Whimsical Wireframes - Lightning fast wireframing with real-time collaboration.
Page Flows - User flow design inspiration for mobile & desktop