Google

Google App Maker is Google’s no-code development platform. It is part of Google G suite, and has a very strong focus on creating apps that use mainly Google services.
Access to App Maker comes with any G Suite Business and Enterprise subscription, as well as the G Suite for Education edition. The overall idea here is to help virtually anybody in an organization — including those with little to no coding experience — to build their own line-of-business apps based on data that’s already stored in G Suite, Google’s Cloud SQL database or any other database that supports JDBC or that offers a REST API.