Valentina Server - Valentina Server is 3 in 1: Valentina DB Server / SQLite Server / Report Server
Oracle TimesTen - TimesTen is an in-memory, relational database management system with persistence and...
Datomic - The fully transactional, cloud-ready, distributed database
MarkLogic Server - MarkLogic Server is a multi-model database that has both NoSQL and trusted enterprise data management capabilities.
Google Cloud Datastore - Cloud Datastore is a NoSQL database for your web and mobile applications.
Datahike - A durable datalog database adaptable for distribution.