The Open XML SDK provides tools for working with Office Word, Excel, and PowerPoint documents. It supports scenarios such as: High-performance generation of word-processing documents, spreadsheets, and presentations. Populating content in Word files from an XML data source.

I'm looking for the same thing, and I just came across XMLmind XML Editor. I like how it can load my files pretty quickly. @rds: I've tried using Eclipse to open my XML files, but it would hang with my files (15MB). I've come to notice any editor built with Java hangs upon trying to open my file, or at least takes an unbearably long time to.
The latest version of Open XML for Excel is 14.1 on Mac Informer. It is a perfect match for the General category. The app is developed by Microsoft and its user rating is 2.7 out of 5.

- - XSLT 1,2 and 3 Editor
- - XSLT Debugger
- - Visual Schema Editor
- - XQuery Editor
- - UniCode
- - XPath 1.0, 2.0
- - XSL-FO
- - DocBook
- - OASIS Catalog
- - Refactoring
- - Project management
- - XML databases
- - Synchronized tree
- - Multiple tree views (namespace..)
- - Dynamic Grid Editor
- - Write data mode
- - XPath for any documents
- - Comment/Uncomment easily
- - Drag'n drop for nodes
- - Select the current node
- - Duplicate sibling nodes
- - Multiple files search
- - Bookmark
- - Validate your document
- - Content assistant
- - Drag' and drop mode for building XSLT
- - Debug into or step by step
- - Profiler for optimizing
- - Template manager
- - XSL-FO output transformation
- - Inner result or browser result
- - Edit the result document
- - Validate your document
- - Content assistant
- - Visual or table mode
- - Simple type or complex type management
- - Generate HTML documentation
- - Namespace management
- - XML Form Designer Form Schema
- - XPath synchronization system
- - Various editing fields and properties
- - Switch to the Source/Visual Editor
- - XML Form Editor
- - Multiple fields management
- - Required values are colored

MOSO Xmplify XML Editor for macOS is a powerful XML editor built specifically for macOS. Xmplify provides a fully XML-aware editing environment with DTD and XML Schema-based auto-completion, automatic document validation, XSLT and XPath support, live HTML preview and much more.

Xmplify XML Editor is a 64-bit native Mac app built from the ground up for macOS, and provides a number of powerful features to make working with and manipulating XML simple and intuitive:

Fully XML-aware editing environment

Xmplify analyses your XML as you type, and maintains a rich set of meta-data so it can provide intelligent editing aids and suggestions according to your document's content and the current editing context.

See your document's structure at a glance

Xmplify provides an Outline view of your document that shows its structure, and automatically keeps the Outline up to date to reflect the latest edits.

Automatic document verification

If your document specifies a DTD or XML Schema, Xmplify automatically uses that to verify your document's content. The verification results are automatically kept up to date as your edit your document.

Auto-complete XML based on its DTD or XML Schema

Xmplify uses its knowledge of your document's current structure and its definition (DTD or XML Schema) to provide intelligent auto-completion suggestions. Xmplify's auto-completion pop-up also displays displays documentation relevant to each auto-completion, putting all the information you need to create and edit semantically correct documents at your fingertips.

Node documentation

Xmplify scans for and displays any documentation provided by your documents' XSDs for whatever node you're currently editing, providing you with full details of the current context no matter where you are in your document. If your document specifies a DTD, Xmplify displays documentation based on the DTD specification for the current node. And if your document doesn't specify an XSD or a DTD, Xmplify displays documentation based on the XSD it automatically derives for you.

And of course, like everything else in Xmplify, node documentation is automatically kept up to date as you move around in and edit your document - or its specification.

Automatic Schema derivation

If your document doesn't specify a DTD or XML Schema Xmplify automatically derives a schema and seamlessly uses the derived schema for providing intelligent auto-completion suggestions. Xmplify updates the derived schema as you edit your document, so it can always offer accurate suggestions.

Xmplify can also derive a Schema from multiple source XML documents, so you don't need to compile a 'master' source XML document with all possible cases in order to derive a comprehensive Schema.

Navigate quickly to element definitions

Xmplify's Goto Specification feature allows you to quickly jump to the location in your document's DTD or XML Schema that defines the elements you're working with. If your document doesn't have an explicit DTD or schema, Goto Specification will take you to the relevant entries in the schema that Xmplify has automatically derived for your document.

XSL transformations

Xmplify makes applying XSLTs and working with their transformations easy, and with Xmplify's Web Preview features you can easily check the output of XSLTs that produce (X)HTML.

Xmplify includes a built-in XSLT 1.0 processor, libxslt, and supports external XSLT processors (including XSLT 2.0 and 3.0 processors), such as Saxon and Xalan.

Web Preview

Xmplify's Web Preview feature provides a preview of (X)HTML documents. Previews are automatically kept up to date as you edit your document. Paragon for mac app store.

Open Xml Formatcode

Powerful searching by both XPath and Regular Expressions

Incremental search with regex support is built-in, and Xmplify makes it easy to run XPath queries and select matching nodes in your document.

Built from the ground up for macOS

Xmplify is a 64-bit native Mac app, designed and built from the ground up to leverage the power and elegance of macOS.

In good company

Xmplify is used by a diverse range of leading businesses, educational & research institutions and individuals in over 50 countries around the world, including:

Open Xml Formatted

ABC News
Amazon
Agence France Presse
Agilent Technologies
Ally Financial
Apple
ATK Aerospace
Avid
Beats by Dr Dre
Big Nerd Ranch
Brightcove
British Museum
British Standards Institute
CBS Interactive
Cisco
Cochlear
Columbia Sportswear
Columbia University
Consumer Reports
CSG International
CSIRO
Dictionary.com
Disney
DN.se
Dolby Laboratories
eBay
F-Secure
F5 Networks
Fidelity Investments
FileMaker
Flipkart
Fraunhofer Institute
Genentech
Gracenote
Gulfstream Aerospace
HarperCollins
HP
IBM
IEEE
IMG
Imperial College London
Johns Hopkins University
JP Morgan
Juniper Networks
Lawrence Berkeley National Laboratory
LiquidSpace
London Business School
Marvell Semiconductor
Mayo Clinic
Merck
南京大学 (Nanjing University)
Netflix
Nielsen
Nike
Nikon
Norwegian Broadcasting Corporation
OASIS
OpenTable
OpenText
Oracle
Palo Alto Networks
PayPal
Perforce
PGA Tour
PricewaterhouseCoopers
Rovio
RSA
Salesforce.com
SAP

Open Xml For Mac