Datomic - The fully transactional, cloud-ready, distributed database
Oracle TimesTen - TimesTen is an in-memory, relational database management system with persistence and...
DynamoDB - Amazon DynamoDB is a fast and flexible NoSQL database service for all applications that need consistent, single-digit millisecond latency at any scale. It is a fully managed cloud database and supports both document and key-value store models.
Datahike - A durable datalog database adaptable for distribution.
MarkLogic Server - MarkLogic Server is a multi-model database that has both NoSQL and trusted enterprise data management capabilities.
Valentina Server - Valentina Server is 3 in 1: Valentina DB Server / SQLite Server / Report Server