List of the Top 16 Free OLAP Databases in 2025

BigQuery is specifically designed for Online Analytical Processing (OLAP), enabling rapid data querying and analysis on complex, multidimensional datasets. This platform empowers organizations to execute intricate analytical queries on extensive datasets, facilitating thorough analysis across multiple business facets. With its automatic scaling capability, BigQuery efficiently manages even the most demanding OLAP workloads. New users can benefit from $300 in complimentary credits to experience firsthand how BigQuery can optimize OLAP functions, enhancing both the speed and precision of their business intelligence efforts. Additionally, its serverless design allows organizations to concentrate on their data without the burden of infrastructure management.

StarTree Cloud functions as a fully-managed platform for real-time analytics, optimized for online analytical processing (OLAP) with exceptional speed and scalability tailored for user-facing applications. Leveraging the capabilities of Apache Pinot, it offers enterprise-level reliability along with advanced features such as tiered storage, scalable upserts, and a variety of additional indexes and connectors. The platform seamlessly integrates with transactional databases and event streaming technologies, enabling the ingestion of millions of events per second while indexing them for rapid query performance. Available on popular public clouds or for private SaaS deployment, StarTree Cloud caters to diverse organizational needs. Included within StarTree Cloud is the StarTree Data Manager, which facilitates the ingestion of data from both real-time sources—such as Amazon Kinesis, Apache Kafka, Apache Pulsar, or Redpanda—and batch data sources like Snowflake, Delta Lake, Google BigQuery, or object storage solutions like Amazon S3, Apache Flink, Apache Hadoop, and Apache Spark. Moreover, the system is enhanced by StarTree ThirdEye, an anomaly detection feature that monitors vital business metrics, sends alerts, and supports real-time root-cause analysis, ensuring that organizations can respond swiftly to any emerging issues. This comprehensive suite of tools not only streamlines data management but also empowers organizations to maintain optimal performance and make informed decisions based on their analytics.

ClickHouse is a highly efficient, open-source OLAP database management system that is specifically engineered for rapid data processing. Its unique column-oriented design allows users to generate analytical reports through real-time SQL queries with ease. In comparison to other column-oriented databases, ClickHouse demonstrates superior performance capabilities. This system can efficiently manage hundreds of millions to over a billion rows and can process tens of gigabytes of data per second on a single server. By optimizing hardware utilization, ClickHouse guarantees swift query execution. For individual queries, its maximum processing ability can surpass 2 terabytes per second, focusing solely on the relevant columns after decompression. When deployed in a distributed setup, read operations are seamlessly optimized across various replicas to reduce latency effectively. Furthermore, ClickHouse incorporates multi-master asynchronous replication, which supports deployment across multiple data centers. Each node functions independently, thus preventing any single points of failure and significantly improving overall system reliability. This robust architecture not only allows organizations to sustain high availability but also ensures consistent performance, even when faced with substantial workloads, making it an ideal choice for businesses with demanding data requirements.

Databend stands out as a pioneering, cloud-centric data warehouse designed for high-speed, cost-efficient analytics tailored for large-scale data processing requirements. Its flexible architecture enables it to adjust seamlessly to fluctuating workloads, thus optimizing resource utilization and minimizing costs. Built using Rust, Databend boasts impressive performance features like vectorized query execution and columnar storage, which significantly improve the speed of data retrieval and processing tasks. The cloud-first design allows for easy integration with a range of cloud services, while also emphasizing reliability, data consistency, and resilience against failures. As an open-source platform, Databend offers a flexible and user-friendly solution for data teams seeking efficient management of big data analytics in cloud settings. Furthermore, its ongoing updates and support from the community guarantee that users are equipped with the most current advancements in data processing technology, ensuring a competitive edge in the rapidly evolving data landscape. This commitment to innovation makes Databend a compelling choice for organizations aiming to harness the full potential of their data.

Trino is an exceptionally swift query engine engineered for remarkable performance. This high-efficiency, distributed SQL query engine is specifically designed for big data analytics, allowing users to explore their extensive data landscapes. Built for peak efficiency, Trino shines in low-latency analytics and is widely adopted by some of the biggest companies worldwide to execute queries on exabyte-scale data lakes and massive data warehouses. It supports various use cases, such as interactive ad-hoc analytics, long-running batch queries that can extend for hours, and high-throughput applications that demand quick sub-second query responses. Complying with ANSI SQL standards, Trino is compatible with well-known business intelligence tools like R, Tableau, Power BI, and Superset. Additionally, it enables users to query data directly from diverse sources, including Hadoop, S3, Cassandra, and MySQL, thereby removing the burdensome, slow, and error-prone processes related to data copying. This feature allows users to efficiently access and analyze data from different systems within a single query. Consequently, Trino's flexibility and power position it as an invaluable tool in the current data-driven era, driving innovation and efficiency across industries.

No matter if your project consists of a single table or multiple tables, StarRocks promises a remarkable performance boost of no less than 300% when stacked against other commonly used solutions. Its extensive range of connectors allows for the smooth ingestion of streaming data, capturing information in real-time and guaranteeing that you have the most current insights at your fingertips. Designed specifically for your unique use cases, the query engine enables flexible analytics without the hassle of moving data or altering SQL queries, which simplifies the scaling of your analytics capabilities as needed. Moreover, StarRocks not only accelerates the journey from data to actionable insights but also excels with its unparalleled performance, providing a comprehensive OLAP solution that meets the most common data analytics demands. Its sophisticated caching system, leveraging both memory and disk, is specifically engineered to minimize the I/O overhead linked with data retrieval from external storage, which leads to significant enhancements in query performance while ensuring overall efficiency. Furthermore, this distinctive combination of features empowers users to fully harness the potential of their data, all while avoiding unnecessary delays in their analytic processes. Ultimately, StarRocks represents a pivotal tool for those seeking to optimize their data analysis and operational productivity.

ScyllaDB is an exemplary database solution tailored for applications that require exceptional performance and low latency, specifically addressing the needs of data-heavy operations. It enables teams to leverage the increasing processing power of contemporary infrastructures, effectively eliminating barriers to scaling as data volumes grow. Unlike traditional database systems, ScyllaDB is a distributed NoSQL database that ensures complete compatibility with both Apache Cassandra and Amazon DynamoDB, while also featuring innovative architectural advancements that enhance user experience at significantly lower costs. More than 400 pioneering companies, such as Disney+ Hotstar, Expedia, FireEye, Discord, Zillow, Starbucks, Comcast, and Samsung, depend on ScyllaDB to meet their complex database challenges. In addition to its robust capabilities, ScyllaDB is available in multiple formats, including a free open-source edition, a fully-supported enterprise version, and a managed database-as-a-service (DBaaS) that operates across various cloud platforms, providing flexibility to suit a wide array of user requirements. This adaptability not only positions ScyllaDB as a leading choice but also encourages organizations to enhance their database performance and efficiency in an increasingly data-driven landscape.

Firebolt delivers remarkable speed and adaptability, enabling users to confront even the toughest data challenges head-on. By innovating the concept of the cloud data warehouse, Firebolt ensures a fast and efficient analytics experience no matter the size of the data involved. This impressive boost in performance allows for the processing of extensive datasets with increased granularity through incredibly quick queries. Users can seamlessly modify their resources to meet varying workloads, data volumes, and numbers of concurrent users. At Firebolt, we strive to enhance the user-friendliness of data warehouses, moving away from traditional complexities. Our dedication to streamlining processes transforms once daunting tasks into simple operations. In contrast to other cloud data warehouse services that benefit from your resource consumption, we embrace a model centered on transparency and fairness. Our pricing framework is designed to facilitate growth without imposing hefty costs, making our solution both effective and budget-friendly. Ultimately, Firebolt equips organizations to fully leverage their data while minimizing the usual obstacles, thereby fostering a more efficient data management experience. This approach not only enhances productivity but also promotes a culture of data-driven decision-making.

Greenplum Database® is recognized as a cutting-edge, all-encompassing open-source data warehouse solution. It shines in delivering quick and powerful analytics on data sets that can scale to petabytes. Tailored specifically for big data analytics, the system is powered by a sophisticated cost-based query optimizer that guarantees outstanding performance for analytical queries on large data sets. Operating under the Apache 2 license, we express our heartfelt appreciation to all current contributors and warmly welcome new participants to join our collaborative efforts. In the Greenplum Database community, all contributions are cherished, no matter how small, and we wholeheartedly promote various forms of engagement. This platform acts as an open-source, massively parallel data environment specifically designed for analytics, machine learning, and artificial intelligence initiatives. Users can rapidly create and deploy models aimed at addressing intricate challenges in areas like cybersecurity, predictive maintenance, risk management, and fraud detection, among many others. Explore the possibilities of a fully integrated, feature-rich open-source analytics platform that fosters innovation and drives progress in numerous fields. Additionally, the community thrives on collaboration, ensuring continuous improvement and adaptation to emerging technologies in data analytics.

Hydra presents a groundbreaking, open-source approach that converts Postgres into a column-oriented database, facilitating immediate queries across billions of rows without requiring any changes to your current codebase. Utilizing sophisticated methods such as parallelization and vectorization for aggregate operations like COUNT, SUM, and AVG, Hydra greatly improves the speed and effectiveness of data processing within Postgres. In a mere five minutes, you can implement Hydra while keeping your existing syntax, tools, data model, and extensions intact, making integration remarkably straightforward. For those interested in a hassle-free experience, Hydra Cloud delivers seamless functionality and peak performance. Industries can tap into customized analytics by harnessing robust Postgres extensions and personalized functions, empowering you to manage your data requirements effectively. Tailored to meet user needs, Hydra emerges as the quickest Postgres solution for analytical purposes, proving to be an indispensable asset for data-centric decision-making. With features such as columnar storage, query parallelization, and vectorization, Hydra is set to revolutionize the landscape of analytics and transform how organizations engage with their data. As the demand for rapid and efficient data analysis grows, Hydra positions itself as a game-changer in the realm of database management.

Apache Doris is a sophisticated data warehouse specifically designed for real-time analytics, allowing for remarkably quick access to large-scale real-time datasets. This system supports both push-based micro-batch and pull-based streaming data ingestion, processing information within seconds, while its storage engine facilitates real-time updates, appends, and pre-aggregations. Doris excels in managing high-concurrency and high-throughput queries, leveraging its columnar storage engine, MPP architecture, cost-based query optimizer, and vectorized execution engine for optimal performance. Additionally, it enables federated querying across various data lakes such as Hive, Iceberg, and Hudi, in addition to traditional databases like MySQL and PostgreSQL. The platform also supports intricate data types, including Array, Map, and JSON, and includes a variant data type that allows for the automatic inference of JSON data structures. Moreover, advanced indexing methods like NGram bloomfilter and inverted index are utilized to enhance its text search functionalities. With a distributed architecture, Doris provides linear scalability, incorporates workload isolation, and implements tiered storage for effective resource management. Beyond these features, it is engineered to accommodate both shared-nothing clusters and the separation of storage and compute resources, thereby offering a flexible solution for a wide range of analytical requirements. In conclusion, Apache Doris not only meets the demands of modern data analytics but also adapts to various environments, making it an invaluable asset for businesses striving for data-driven insights.

Citus enriches the widely appreciated Postgres experience by offering distributed table capabilities while being entirely open source. It now accommodates both schema-based and row-based sharding, ensuring compatibility with Postgres 16. You can effectively scale Postgres by distributing data and queries, starting with a single Citus node and smoothly incorporating additional nodes and rebalancing shards as your requirements grow. By leveraging parallelism, keeping a larger dataset in memory, boosting I/O bandwidth, and using columnar compression, query performance can be significantly enhanced, achieving speeds up to 300 times or even more. As an extension rather than a separate fork, Citus remains compatible with the latest Postgres versions, allowing you to leverage your existing SQL expertise and tools. Furthermore, it enables you to address infrastructure challenges by managing both transactional and analytical workloads within one database system. Available for free as open source, Citus allows for self-management while also inviting contributions to its development via GitHub. Transitioning your focus from database management to application development becomes easier as you run your applications on Citus within the Azure Cosmos DB for PostgreSQL environment, thus streamlining your workflow. This integration not only boosts efficiency but also empowers developers to harness the full potential of scalable, high-performance database solutions.

The Databricks Data Intelligence Platform empowers every individual within your organization to effectively utilize data and artificial intelligence. Built on a lakehouse architecture, it creates a unified and transparent foundation for comprehensive data management and governance, further enhanced by a Data Intelligence Engine that identifies the unique attributes of your data. Organizations that thrive across various industries will be those that effectively harness the potential of data and AI. Spanning a wide range of functions from ETL processes to data warehousing and generative AI, Databricks simplifies and accelerates the achievement of your data and AI aspirations. By integrating generative AI with the synergistic benefits of a lakehouse, Databricks energizes a Data Intelligence Engine that understands the specific semantics of your data. This capability allows the platform to automatically optimize performance and manage infrastructure in a way that is customized to the requirements of your organization. Moreover, the Data Intelligence Engine is designed to recognize the unique terminology of your business, making the search and exploration of new data as easy as asking a question to a peer, thereby enhancing collaboration and efficiency. This progressive approach not only reshapes how organizations engage with their data but also cultivates a culture of informed decision-making and deeper insights, ultimately leading to sustained competitive advantages.

SAP HANA is a cutting-edge in-memory database that efficiently manages both transactional and analytical workloads by utilizing a single data copy, regardless of its nature. It effectively eliminates the divide between transactional and analytical functions within businesses, allowing for quick decision-making whether used in a traditional data center or through cloud services. This advanced database management system grants users the ability to develop intelligent, real-time applications, which promotes fast decision-making from a consolidated data repository. By integrating sophisticated analytics, it bolsters the performance of modern transaction processing systems. Organizations can leverage cloud-native features such as enhanced scalability, speed, and performance to create comprehensive data solutions. With SAP HANA Cloud, businesses gain access to dependable and actionable insights from a unified platform while maintaining stringent security, privacy, and data anonymization that align with established enterprise standards. In the rapidly evolving market landscape, the intelligent enterprise increasingly depends on prompt insights generated from data, highlighting the necessity for real-time access to critical information. As organizations face rising expectations for immediate insights, adopting a powerful database solution like SAP HANA is essential for maintaining a competitive edge. The ability to make informed decisions based on real-time data is becoming a key differentiator in business success.

The Unified Analytics Warehouse stands out as an exceptional resource for accessing high-performance analytics and machine learning on a large scale. Analysts in the tech research field are identifying emerging leaders who aim to revolutionize big data analytics. Vertica enhances the capabilities of data-centric organizations, enabling them to maximize their analytics strategies. It provides sophisticated features such as advanced time-series analysis, geospatial functionality, machine learning tools, and seamless data lake integration, alongside user-definable extensions and a cloud-optimized architecture. The Under the Hood webcast series from Vertica allows viewers to explore the platform's features in depth, with insights provided by Vertica engineers, technical experts, and others, highlighting its position as the most scalable advanced analytical database available. By supporting data-driven innovators globally, Vertica plays a crucial role in their quest for transformative changes in industries and businesses alike. This commitment to innovation ensures that organizations can adapt and thrive in an ever-evolving market landscape.

Apache Druid stands out as a robust open-source distributed data storage system that harmonizes elements from data warehousing, timeseries databases, and search technologies to facilitate superior performance in real-time analytics across diverse applications. The system's ingenious design incorporates critical attributes from these three domains, which is prominently reflected in its ingestion processes, storage methodologies, query execution, and overall architectural framework. By isolating and compressing individual columns, Druid adeptly retrieves only the data necessary for specific queries, which significantly enhances the speed of scanning, sorting, and grouping tasks. Moreover, the implementation of inverted indexes for string data considerably boosts the efficiency of search and filter operations. With readily available connectors for platforms such as Apache Kafka, HDFS, and AWS S3, Druid integrates effortlessly into existing data management workflows. Its intelligent partitioning approach markedly improves the speed of time-based queries when juxtaposed with traditional databases, yielding exceptional performance outcomes. Users benefit from the flexibility to easily scale their systems by adding or removing servers, as Druid autonomously manages the process of data rebalancing. In addition, its fault-tolerant architecture guarantees that the system can proficiently handle server failures, thus preserving operational stability. This resilience and adaptability make Druid a highly appealing option for organizations in search of dependable and efficient analytics solutions, ultimately driving better decision-making and insights.