Blazing-fast vector DB with similarity search and metadata filtering
A lightweight, lightning-fast, in-process vector database
Conveniently search and update any volume
Relational database replication tool based on XML Schema
dBase for Java
eXist-db is a feature rich Open Source native XML database
elementary database files for Java, B+ tree index files, ISAM
Big Sack: A lightweight Java Key/Value store with undo and disk cache.
Open source Extract Transform Load engine written in Java
A UI tool for any database