Zoho Creator - Zoho Creator is a low-code application development platform that helps you build a custom, mobile-ready apps to run your business.
Airtable - Airtable works like a spreadsheet but gives you the power of a database to organize anything. Sign up for free.
QuintaDB - Solution for creating web forms and databases online where no progamming is required.
MySQL - The world's most popular open source database
DBmaestro - DBmaestro provides solution for database development, build automation, and continuous delivery in any environment.
PostgreSQL - PostgreSQL is a powerful, open source object-relational database system.