Managed MongoDB by DigitalOcean - Dedicated MongoDB starting at $15/mo
Now UI Kit - A beautiful Bootstrap 4 UI kit. Yours free.
DigitalOcean App Platform - A reimagined PaaS (Platform as a Service) for all your apps
Module 02: Layouts - Professional toolkit for UI/UX design
Chat by Stream - Build and ship in app messaging in a few hours
Startup Toolkit - Interactive how-to guides to launch your startup