Airtable - Airtable works like a spreadsheet but gives you the power of a database to organize anything. Sign up for free.
Google App Engine - A powerful platform to build web and mobile apps that scale automatically.
Zoho Creator - Zoho Creator is a low-code application development platform that helps you build a custom, mobile-ready apps to run your business.
Dokku - Docker powered mini-Heroku in around 100 lines of Bash
QuickBase - Quickbase provides a no-code operational agility platform that enables organizations to improve operations through real time insights and automation across complex processes and disparate systems.
Google Cloud Functions - A serverless platform for building event-based microservices.