Top XML GitHub Repositories & Tools (2026)

Powerful local Word Processor for docx and odt. Free, Open Source, Private by Design

Native OOXML engines in Rust - DOCX, XLSX & PPTX editing, rendering and real-time collaboration, compiled to WASM for the web.

Go language library for reading and writing Microsoft Excel™ (XLAM / XLSM / XLSX / XLTM / XLTX) spreadsheets

A configuration as code language with rich validation and tooling.

State machines, statecharts, and actors for complex logic

A tool for mocking HTTP services

PHP Curl Class makes it easy to send HTTP requests and integrate with web APIs

.NET Core library to create highly customized autounattend.xml files

OpenSheetMusicDisplay renders sheet music in MusicXML format in browsers and headless with NodeJS. Based on VexFlow, OSMD is brought to you by PhonicScore.com.

Simple XML parsing in Swift

Open-source semantic layer: one cube for Excel (MDX/XMLA), dashboards, and AI agents (MCP). Mondrian + Apache Calcite.

Apache OFBiz is an open source product for the automation of enterprise processes. It includes framework components and business applications for ERP, CRM, E-Business/E-Commerce, Supply Chain Management and Manufacturing Resource Planning. OFBiz provides a foundation and starting point for reliable, secure and scalable enterprise solutions.

Apache CXF

SVG/XML to Compose ImageVector: IntelliJ IDEA / Android Studio plugin + build-in previewer without compilation, CLI tool, Gradle plugin

True Object-Oriented Java Web Framework without NULLs, Static Methods, Annotations, and Mutable Objects

BaseX Main Repository.

Contextual output encoding for Java 8+: HTML, JavaScript, CSS, XML and URI components. Zero-dependency core with optional JSP, Jakarta and ESAPI adapters.

MIT-licensed, COM-free .NET libraries for creating, reading, editing, converting, rendering, and extracting Office, PDF, email, OneNote, and text formats.

The Web Markup Minifier (abbreviated WebMarkupMin) - a .NET library that contains a set of markup minifiers. The objective of this project is to improve the performance of web applications by reducing the size of HTML, XHTML and XML code.

eXist Native XML Database and Application Platform