Oxla
OLAP engine
C++ MPP OLAP engine, now Redpanda SQL: read-only Postgres-dialect queries over Redpanda topics and Iceberg history in BYOC.
Store
Where the data lives and where the queries run.
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Timeplus
Streaming database
Streaming SQL database with a free Apache 2.0 engine (Proton), a $199/month Cloud plan and self-hosted Enterprise clusters.
OpenSearch
Search-analytics
Apache 2.0 search, log-analytics and vector engine forked from Elasticsearch, with security, alerting, SQL/PPL and k-NN included free.
InfluxDB
Time-series
Time-series database for metrics, IoT and observability: SQL and InfluxQL, Python plugins; free Core caps queries, Enterprise compacts.
Free self-hosted; cloud from $30/month
Tiger Data
Time-series
Tiger Data sells TimescaleDB, a PostgreSQL extension for time-series data, and Tiger Cloud, its managed Postgres service on AWS and Azure.
QuestDB
Time-series
Open-source time-series database with SQL extensions (SAMPLE BY, ASOF JOIN), fast ingestion and Parquet; Enterprise adds HA and security.
Kinetica
OLAP engine
GPU- or CPU-accelerated SQL database for real-time geospatial, time-series, graph, vector and Kafka streaming analytics.
Contact sales for a scoped quote
Teradata VantageCloud
Cloud warehouse
Cloud data warehousing and analytics for enterprise SQL workloads, with VantageCloud Lake compute groups and ClearScape analytical workflows.
Free software; operating costs extra
Presto
Lake query engine
Open-source distributed SQL query engine for analytics across lakes and databases, with connector-backed catalogs and self-managed cluster controls.
Kyligence
OLAP engine
Commercial OLAP engine built on Apache Kylin, with MDX and cell-level security, plus the Zen metrics platform and Copilot.
Hydrolix
OLAP engine
Streaming data lake for high-volume log and event data on object storage, queried with ClickHouse SQL and billed per GB ingested.
Aiven
OLAP engine
Managed open source data platform; Aiven for ClickHouse runs ClickHouse on fixed hourly plans on AWS, GCP or Azure with Kafka and PostgreSQL integrations.