SAP HANA is described as 'completely re-imagined platform for real-time business' and is a Relational Database in the Development category. There are more than 25 alternatives to SAP HANA, not only websites but also apps for a variety of platforms, including Linux, Windows, Mac and BSD. The best alternative is SQLite, which is both free and Open Source. Other great sites and apps similar to SAP HANA are PostgreSQL (Free, Open Source), MySQL Community Edition (Free, Open Source), MongoDB (Freemium) and Microsoft SQL Server (Freemium).
SQLite is a software library that implements a self-contained, serverless, zero-configuration, transactional SQL database engine. SQLite is the most widely deployed SQL database engine in the world. The source code for SQLite is in the public domain.
PostgreSQL is a powerful, open source object-relational database system. It has more than 15 years of active development and a proven architecture that has earned it a strong reputation for reliability, data integrity, and correctness.
SQL Server delivers on Microsoft’s Data Platform vision by helping your organization manage your data by enabling you to store data from structured, semi-structured, and unstructured documents within the database.
Cockroach is a distributed key/value datastore which supports ACID transactional semantics and versioned values as first-class features. The primary design goal is global consistency and survivability, hence the name.