Riak

DataStax is a real-time data company allowing enterprises to mobilize real-time data and quickly build the smart, highly scalable applications required to be a data-driven business. With Astra DB and Astra Streaming, DataStax delivers the power of Apache Cassandra, a scalable database, with the Apache Pulsar streaming technology in an open data stack that is available on any cloud. Astra DB is a multi-cloud DBaaS built on Apache Cassandra, while Astra Streaming is a multi-cloud Streaming-as-a-Service built on Apache Pulsar. The company also offers Luna for Apache Cassandra, a Subscription-to-Success product with open-source Apache Cassandra; Luna Streaming, a Subscription-to-Success product with open-source Apache Pulsar; and DataStax Enterprise, a scale-out, cloud-native NoSQL built on Apache Cassandra. The company's solutions are used by customers across different industries, such as banking, education, financial services, technology, travel, and more. DataStax was founded in 2010 and is based in Santa Clara, California.

Timescale is an open-source time-series database specifically designed for ease of use and complex queries that is fully compatible with Postgres. The company focuses on developers and businesses working with machine data and IoT.

Crate.io is a scalable real-time database for the machine data era, such as information from the Internet of Things that stores massive amounts of data over the cloud and provides it via SQL connections.

SingleStore is a scalable in-memory database that delivers speed and throughput advantages while retaining SQL and ACID compliance. By offering a familiar relational interface to an in-memory data tier, SingleStore empowers developers with the technology web-scale companies use to cope with massive traffic and growth. SingleStore offers orders of magnitude improvements in write and read performance and simplifies application development and maintenance.

Chronosphere is the provider of an observability platform that puts engineering organizations back in control by taming rampant data growth and cloud-native complexity, delivering increased business confidence.

Scality is a provider in software-based storage. The RING provides sotrage for capacity-driven workloads such as cloud services, video, and enterprise archiving. It runs on any standard x86 servers powered by Linux, such as the ones of HP, Dell, Cisco, SuperMicro, or Seagate. It creates an unlimited storage pool for file, object and OpenStack applications. Thanks to its underlying object storage architecture it scales to exabytes of data and trillions of files.