StratusBase - StratusBase is an application designed to take the hassle out of building an online database.
LibreOffice - Base - Base, database, database frontend, LibreOffice, ODF, Open Standards, SQL, ODBC
Grubba.net - The free web based online database for home and office.
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.
Cellica - Read and write to your databases without any programming changes.
MongoDB - MongoDB (from "humongous") is a scalable, high-performance NoSQL database.