Datomic - The fully transactional, cloud-ready, distributed database
Upstash - Upstash provides Serverless Redis and Kafka as a service.
Datahike - A durable datalog database adaptable for distribution.
restdb.io - restdb.io lets you create databases and REST APIs quickly. Development databases are free. Powerful web-based and mobile-friendly data management.
Oracle TimesTen - TimesTen is an in-memory, relational database management system with persistence and...
PlanetScale - The last database you'll ever need. Go from idea to IPO.