nuBuilder Forte - Low-code, open-source RAD development tool for creating web-based database applications.
Airtable - Airtable works like a spreadsheet but gives you the power of a database to organize anything. Sign up for free.
Microsoft Office Access - Access is now much more than a way to create desktop databases. It’s an easy-to-use tool for quickly creating browser-based database applications.
Ragic - World's most advanced online database engine. Build powerful online databases with simple Excel style online interface.
PHPmaker - PHPMaker is a powerful automation tool that can generate a full set of PHP quickly from MySQL, PostgreSQL, Oracle, Microsoft Access, Microsoft SQL Server and SQLite databases.
Zoho Creator - Zoho Creator is a low-code application development platform that helps you build a custom, mobile-ready apps to run your business.