OpenMLDB

OpenMLDB is ranked #8 of 15 in feature store software on The Geeks Club. It runs on API, Linux, macOS, Self-hosted. There is a free plan.

OpenMLDB plans and pricing

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OpenMLDB Free Open-source machine learning database; standalone and cluster versions openmldb.ai · 3 Oct 2026

Compared on feature store software

Online store: Yes
Offline store: Yes
Point-in-time joins: Yes
Feature monitoring: Yes
Deployment model: self_hosted
Serving modes: both

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OpenMLDB

What it does: OpenMLDB is an open-source machine learning database and feature platform for consistent features in training and inference.
SQL workflow: OpenMLDB uses SQL to develop feature engineering scripts, deploy them online, and configure online data sources.
Batch and real-time engines: Its architecture includes a real-time SQL engine, a batch SQL engine based on a tailored Spark distribution, and a unified execution plan generator.
Real-time features: The documentation says its real-time SQL engine can produce features in a few milliseconds.
SQL extensions: OpenMLDB extends SQL for feature engineering with syntax including LAST JOIN and WINDOW UNION.
Production capabilities: The documentation lists distributed storage and computing, fault recovery, high availability, scale-out, upgrades, monitoring, and heterogeneous memory support.
Deployment options: OpenMLDB has a cluster version for large-scale production applications and a lightweight single-node standalone version for evaluation and demonstration.
Pulsar integration: The OpenMLDB Pulsar Connector is described as a way to import real-time data streams from Apache Pulsar into OpenMLDB.
DolphinScheduler integration: OpenMLDB provides a DolphinScheduler task for integrating feature engineering into workflows, including offline import, feature extraction, SQL deployment, and online import.
Kubernetes deployment: The deployment guide describes Kubernetes deployment for both OpenMLDB's offline and online engines.
Kubernetes requirements: The Kubernetes deployment tool is tested with Kubernetes 1.19 or later and Helm 3.2.0 or later.
Kubernetes limitation: The documented Kubernetes cluster deployment does not include a TaskManager, so LOAD DATA, SELECT INTO, and offline-related functions are unsupported in that deployment.
Spark distribution: The OpenMLDB Spark distribution provides Scala, Java, Python, and R interfaces, and its precompiled AllinOne version supports Linux and macOS.
Community support: The project directs users to GitHub Issues for bug reports and feature requests, GitHub Discussions, Slack, and a developer mailing list.
Price from: Free

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Where it ranks on The Geeks Club

Best Feature Store Software in 2026#8 of 15

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Sources

openmldb.ai/docs/en/v0.5/about/intro.html· checked 3 Oct 2026
openmldb.ai/en/openmldb-pulsar-connector%EF%BC%9A-e· checked 3 Oct 2026
openmldb.ai/docs/en/v0.9/integration/deploy_integra· checked 3 Oct 2026
openmldb.ai/en/kubernetes-deployment-guide-for-open· checked 3 Oct 2026
openmldb.ai/docs/en/v0.6/tutorial/openmldbspark_dis· checked 3 Oct 2026