Google Cloud PostgreSQL - Fully-managed database service
RapidClipse - RapidClipse is a web-based development platform that allows you to build the app with Java and provides you with a hustle-free configuration.
SQL query for CSV - SQL query for CSV helps people analyze large sets of csv records in a short time using declarative SQL syntax.
Decision.io - Decision.io is an interesting platform that provides you the simple features to develop the app or an integrated workflow without using any program language or code.
Supabase - An open source Firebase alternative
Codeless Platforms - Codeless Platforms is a web-based platform that allows you to develop various applications and business processes without any coding and programming.