DataNucleus AccessPlatform : A standards-compliant Java persistence product

DataNucleus AccessPlatform is a standards-compliant Java persistence product. It is fully compliant with the JDO1, JDO2, JDO2.1, JDO2.2, JDO3, JPA1, and JPA2 Java standards, and provides a REST API. It complies with the OGC Simple Feature Spec for persistence of geospatial Java types. It allows access to all popular RDBMS available today, together with db4o, LDAP, NeoDatis, JSON, Excel/ODF spreadsheets, XML, BigTable, and HBase databases.

• Licenses : Apache 2.0
• Implementation : Java, JPA, JDO, REST

HeliDB : A database for storing key-value pairs from a Java program

HeliDB is a database for storing key-value pairs from a Java program. The client program creates one database object per database file. The database objects can be configured to support different capabilities. In its simplest configuration, a database is a file-backed map. More advanced configurations can give it transaction support or fast record searches by indexing records in a B+ tree.

• Licenses : LGPL
• Operating Systems : OS Independent
• Implementation : Java

jWebApp : A Java-based Model-View-Controller (MVC) Web application framework

jWebApp is a Java-based Model-View-Controller (MVC) Web application framework that is specifically designed to satisfy the need for minimalistic simple Web development. It is configuration-free, straightforward, and extremely easy to work with.

• Licenses : AGPLv3
• Operating Systems : OS Independent
• Implementation : Java

DataNucleus Access Platform : A standards-compliant Java persistence product

DataNucleus Access Platform is a standards-compliant Java persistence product. It is fully compliant with the JDO1, JDO2, JDO2.1, JDO2.2, JDO2.3, and JPA1 Java standards, and provides a REST API. It complies with the OGC Simple Feature Spec for persistence of geospatial Java types. It allows access to all popular RDBMS available today, together with db4o, LDAP, NeoDatis, JSON, Excel/ODF spreadsheets, XML, BigTable, and HADOOP databases.

• Licenses : Apache 2.0
• Implementation : Java, JPA, JDO, REST