1.
eXtremeDB Database Management System for Professional Developers - McObject LLC
https://www.mcobjec
.com/

Small, fast, reliable database management system Persistent and/or in-memory data storage for edge-cloud, powerful for professional developers

2.
QuestDB | Peak time-series performance database
https://questd
.io/

QuestDB is the world's fastest growing open-source time-series database. It offers massive ingestion throughput, millisecond queries, powerful time-series SQL extensions, and scales well with minimal and maximal hardware. Save costs with better performance and efficiency.

3.
MariaDB Enterprise Open Source Database | MariaDB
https://mariad
.com/

MariaDB provides enterprise open source database and cloud managed database services to support scalability, mission-critical deployments, and more.

4.
GridDB: Open Source Time Series Database for IoT
https://gridd
.net/

Toshiba GridDBâ„¢ is a highly scalable, in-memory NoSQL time series database optimized for IoT and Big Data.

5.
ScyllaDB | Monstrously Fast + Scalable NoSQL
https://www.scyllad
.com/

ScyllaDB is the distributed database for data-intensive apps that require high performance and low latency.

6.
ArangoDB: Multi-Model Database for Your Modern Apps
https://www.arangod
.com/

ArangoDB is the leading multi-model database for high-performance applications. Try it now for flexible data modeling and efficient querying.

7.
Oracle Berkeley DB
https://www.oracl
.com/database/technologies/related/berkeleydb.html/

The Oracle Berkeley DB family of open source, embeddable databases provides developers with fast, reliable, local persistence with zero administration. Often deployed as an 'edge' database, Oracle Berkeley DB provides very high performance, reliability, scalability, and availability for application use cases that do not require SQL

9.
BangDB - AI Database for Graph and Time-Series Data
https://bangd
.com/

BangDB is an AI database platform with Graph and time-series data analysis. It is designed for modern use cases for edge computing