Apache Pinot is an open-source, distributed OLAP datastore for low-latency, real-time analytics. It was originally built at LinkedIn and Uber and can combine streaming sources such as Apache Kafka, Apache Pulsar and AWS Kinesis with batch sources such as Hadoop, Spark and S3 in the same table. Pinot offers a SQL interface with a query editor and REST API, joins, upserts, a range of index types and multitenancy through logical namespaces, and it scales horizontally. Organisations use it for analytics inside user-facing applications and for real-time operational monitoring. Pinot is installed and operated by the user; the project provides a Helm chart for Kubernetes.
Pinot is a project of the Apache Software Foundation and is released under the Apache License 2.0. There is no vendor hosting your data: where it resides depends on where you choose to run the system, for example in a European data centre. This limits dependence on a single commercial provider. The foundation itself is a US-based non-profit organisation.