dbaas
(5)
Couchbase
Couchbase is an enterprise NoSQL database company whose distributed, document-oriented platform powers low-latency, high-throughput applications for large organizations. Its flagship products - Couchbase Server, the fully managed Capella database-as-a-service, and Couchbase Mobile/Lite for edge and offline use - combine key-value speed, JSON flexibility, SQL-style querying (SQL++/N1QL), full-text and vector search in a single system. Founded in 2009 and long a rival to MongoDB, Couchbase went public on Nasdaq in 2021 and was taken private by Haveli Investments in a $1.5 billion deal in September 2025.
Greptime
Greptime is an open-source database company building GreptimeDB, a unified observability database that stores metrics, logs, traces, and wide events in a single engine on object storage like Amazon S3. Written in Rust and built on Apache Arrow and DataFusion, it separates compute from storage to cut costs at scale and speaks both SQL and PromQL. Founded in 2022 by ex-Alibaba and Ant Group engineers, Greptime positions GreptimeDB as a drop-in replacement for the Prometheus, Loki, and Elasticsearch stack, serving customers across connected vehicles, IoT, and observability.
Redis
Redis is the company behind the world's most popular in-memory data store, the open-source database that began as a side project by Salvatore Sanfilippo in 2009 and now sits in the stack of most of the internet's largest applications. It sells managed and self-hosted enterprise versions - Redis Cloud and Redis Software - layered on the open-source core, and has pushed hard into real-time AI use cases like vector search and LLM memory. After a turbulent 2024 licensing fight that spawned the AWS-backed Valkey fork, Redis returned to an open-source license (AGPLv3) with Redis 8 in 2025.
Imply
Imply is a San Francisco-based data analytics company that built its platform on Apache Druid - the open-source real-time analytics database that its co-founders helped create. The company offers Imply Polaris, a fully managed cloud database-as-a-service for real-time analytics, and Imply Lumi, billed as the industry's first Observability Warehouse. With $215M in total funding and unicorn status at a $1.1B valuation, Imply serves 100+ enterprise customers including Atlassian, Reddit, and Cisco ThousandEyes, enabling sub-second query performance across terabytes to petabytes of streaming and historical data.
TiDB, powered by PingCAP
PingCAP is the company behind TiDB, an open-source, MySQL-compatible distributed SQL database built for hybrid transactional and analytical workloads. TiDB scales horizontally across cloud and on-prem deployments, and now powers AI agent workloads through TiDB X with built-in vector search.