4D Alternatives

It is Both Under the GPL and it is also Proprietary if using the GPL version the software you make...

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.

Base, database, database frontend, LibreOffice, ODF, Open Standards, SQL, ODBC

H2 is a relational database management system written in Java.

ESM Tools is a powerful and widely known software development platform that comes with a centralized model infrastructure, providing the common frame for compiling, running, downloading, and organizing models (ones or multiple).

Symphytum Project

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IBM Informix is a secure embeddable database optimized for OLTP and IoT data. Informix can seamlessly integrate SQL, NoSQL/JSON, and time series and spatial data.

The Apache HDFS is a distributed file system that makes it possible to scale a single Apache Hadoop cluster to hundreds (and even thousands) of nodes.

FileMaker Pro Advanced includes all the features of FileMaker Pro plus a set of advanced tools so you can rapidly build powerful custom apps.

The world's most trusted and proven in-memory database management system with hybrid architecture and outstanding support for over 19 years.

Meet Neo4j: The graph database platform powering today's mission-critical enterprise applications, including artificial intelligence, fraud detection and recommendations.

Online Database Software. TeamDesk is a web-based database aimed to facilitate working with data, organize and store information you are using in your routine work, create an easily accessible data source for your team.

paid Free Trial $49.0 / Monthly (5 Users, Unlimited tables, records, storage space and support)