Best XML Databases in 2025

Built to run the world’s mission-critical workloads. Designed by the world’s leading database experts, IBM Db2 empowers developers, enterprise architects, and data engineers to run low-latency transactions and real-time analytics equipped for the most demanding workloads. From microservices to AI workloads, Db2 is the tested, resilient, and hybrid database providing the extreme availability, built-in refined security, effortless scalability, and intelligent automation for systems that run the world.

InterSystems IRIS is a complete cloud-first data platform that includes a multi-model transactional data management engine, an application development platform, and interoperability engine, and an open analytics platform. It is the next generation of our proven data management software.It includes the capabilities of InterSystems Cache and Ensemble, plus a wealth of exciting new capabilities to make it easy to build and deploy cloud based, analytics-intensive enterprise applications with even greater performance and scalability. InterSystems IRIS provides a set of APIs to operate with transactional persistent data simultaneously: key-value, relational, object, document, multidimensional. Data can be managed by SQL, Java, node.js, .NET, C++, Python, and native server-side ObjectScript language. InterSystems IRIS includes an Interoperability engine and modules to build AI solutions. InterSystems IRIS provides features for horizontal scalability (sharding, ECP) and provides High Availability features, Business intelligence, transaction support, and backup.

Flexter is a distributed and secure big data solution for converting XML to text, Hadoop, or a database. It provides rapid conversion of complex XML data locked away in industry data standards and other proprietary XML formats.

Progress MarkLogic is an enterprise-grade multi-model data management platform that unlocks value from complex data. It works with the full breadth of a company's information and makes it easily discoverable and ready to power high-value applications, decision intelligence and trustworthy AI. Organizations leverage integrated capabilities to integrate, harmonize, search and visualize multi-model data to build a connected data ecosystem as the secure and scalable foundation for the AI era.

The Qualcomm Qizx software is a NoSQL, document-oriented, native XML database that stores, retrieves, and manipulates XML files, documents, and semi-structured data. Qizx is enterprise-ready and is well-suited for high volume, high throughput, workflow environments and text intensive projects where documents need to be quickly loaded and indexed for searching.

Altova XMLSpy is the world’s best-selling JSON and XML editor for modeling, editing, transforming, and debugging related technologies. It gives developers the tools they need to build the most sophisticated applications with its graphical schema designer, code generation, file converters, debuggers, and profilers for working with XSD, JSON Schema, XSLT, XQuery, XBRL, SOAP, and more.

The Apache Santuario project is aimed at providing implementation of the primary security standards for XML.

Xerces is Apache's collection of software libraries for parsing, validating, serializing and manipulating XML. The library implements a number of standard APIs for XML parsing, including DOM, SAX and SAX2.

The Apache Xalan Project develops and maintains libraries and programs that transform XML documents using XSLT standard stylesheets.

The Apache Axiom library provides an XML Infoset compliant object model implementation which supports on-demand building of the object tree. It supports a novel "pull-through" model which allows one to turn off the tree building and directly access the underlying pull event stream using the StAX API.

MissionKit is a software development suite of enterprise-class XML, JSON, SQL, and UML tools for information architects and application developers. MissionKit includes Altova XMLSpy, MapForce, StyleVision, and other market-leading products for building today’s real-world software solutions.

Apache Anakia is an XML transformation tool which uses JDOM and Velocity to transform XML documents into the format of your choice.

BaseX is a light-weight, high-performance and scalable XML Database engine and XPath/XQuery 3.1 Processor, which includes full support for the W3C Update and Full Text extensions. An interactive and user-friendly GUI frontend gives you great insight into your XML documents.

Apache Scout is an implementation of the JSR 93 (JAXR). It provides an implementation to access UDDI registries (particularly Apache jUDDI) in a standard way.

HREFLang Builder is an enterprise-grade solution to map, manage, monitor and store the XML site maps representing your alternate language pages