SAP HANA, express edition is a streamlined version of SAP HANA designed to run on laptops and other hosts. It is free to use (even for production use cases) for in-memory databases up to 32GB. You can expand your deployment to 64GB, 128GB or 256GB with the purchase of an additional license.

It contains a rich set of capabilities for a developer to work with, including bring-your-own-language and micro-services, predictive analytics and machine learning algorithms, and geospatial processing for building insight-driven applications.
Capabilities

Transform Database Management: Simplify operations using a single copy of enterprise data and a secure modern data platform.

Process Data In-Memory: Process transactions and analytics data wherever it resides using data virtualization, integration or replication.

Leverage Advanced Analytics: Leverage advanced data processing engines for business, text, spatial, graph and series data.

Develop Next-Generation Applications: Leverage hybrid transactional and analytical processing capabilities to build next generation applications that enable live analytics on transactional data.