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Open XML SDK Alternatives
Similar projects and alternatives to Open XML SDK
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sso-wall-of-shame
A list of vendors that treat single sign-on as a luxury feature, not a core security requirement.
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ReSharper
ReSharper is now available in VS Code and Cursor. ReSharper brings a professional toolset for C# developers backed by over 20 years of experience, enterprise-grade security, SOC 2 compliance, and the trust of companies worldwide.
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windmill
Open-source developer platform to power your entire infra and turn scripts into webhooks, workflows and UIs. Fastest workflow engine (13x vs Airflow). Open-source alternative to Retool and Temporal.
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QuestPDF
QuestPDF is a modern library for PDF document generation. Its fluent C# API lets you design complex layouts with clean, readable code. Create documents using a flexible, component-based approach.
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ClosedXML
ClosedXML is a .NET library for reading, manipulating and writing Excel 2007+ (.xlsx, .xlsm) files. It aims to provide an intuitive and user-friendly interface to dealing with the underlying OpenXML API.
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polis
Streamline your web application's authentication with Polis, an SSO service supporting SAML and OpenID Connect protocols. Beyond enterprise-grade Single Sign-On, it also supports Directory Sync via the SCIM 2.0 protocol for automatic user and group provisioning/de-provisioning.
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SaaSHub
SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives
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NPOI
a .NET library that can read/write Office formats without Microsoft Office installed. No COM+, no interop.
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DocX
Fast and easy to use .NET library that creates or modifies Microsoft Word files without installing Word. (by xceedsoftware)
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ShapeCrawler
PowerPoint .NET library for reading, modifying, and generating PPTX presentations without Microsoft Office
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MiniExcel
Lightweight, fast and simple cross-platform .NET processing tool for importing and exporting spreadsheet documents
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SaaSHub
SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives
NOTE:
The number of mentions on this list indicates mentions on common posts plus user suggested alternatives.
Hence, a higher number means a better Open XML SDK alternative or higher similarity.
Open XML SDK discussion
Open XML SDK reviews and mentions
Posts with mentions or reviews of Open XML SDK.
We have used some of these posts to build our list of alternatives
and similar projects. The last one was on 2026-05-28.
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Ruby vs. Java vs. TypeScript: my experience on building a Cowork DOCX plugin
That is the source of DocumentFormat.OpenXml, you're talking about the same package, https://github.com/dotnet/Open-XML-SDK#packages
Microsoft are incapable of:
1. naming things well -
Top 5 C# PPT Libraries .NET Developers Should Be Familiar With
Open XML SDK is an open-source PowerPoint Interop Library that provides a low-level API for working with Microsoft PowerPoint files. It enables modifying existing PowerPoint files, making it a good option for applications that require direct XML manipulation of PowerPoint documents.
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Libcurl
While it doesn't appear to have been updated in many years, Microsoft built a similarly useful tool[1] that lets you browse the structure of a given Office document and see C# code that generates various components of it.
[1] https://github.com/dotnet/Open-XML-SDK/releases/tag/v2.5
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Is it possible to use Microsoft Word features programatically?
If you use this check out the productivity tool, it will convert a word doc to csharp for you. https://github.com/dotnet/Open-XML-SDK/releases/tag/v2.5
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Go library that supports extraction and generation of word documents with complex formulae, equations, tables and images.
You’re looking for OpenXML handling. C# probably has the best support, since there’s a Microsoft supported SDK - https://github.com/dotnet/Open-XML-SDK
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If you had to pick a library from another language (Rust, JS, etc.) that isn’t currently available in Python and have it instantly converted into Python for you to use, what would it be?
https://github.com/dotnet/Open-XML-SDK Yeah, it can be kind of wrapped with pythonnet and stuff. But having it totally pyhtonized would be sooooo great.
- Creating a Web App using Excel
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Count lines, words, and characters of a MS Word file? ( i.e. Test1.docx )
As an alternative, you could use the Powershell module Open-XML-SDK or PSwriteWord, or PSWriteOffice
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OpenXml throws a different exception given identical code and similar build configuration for two distinct solutions. Why?
PackageLoader was introduced in https://github.com/OfficeDev/Open-XML-SDK/commit/522200f65b9182f65a112130f830403467f54936
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Programatically replacing text in docx
In the official GitHub repository you will find similar tools listed, if you have a very particular requirement not fulfilled by OpenXML SDK.
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A note from our sponsor - ReSharper
www.jetbrains.com | 13 Jun 2026
Stats
Basic Open XML SDK repo stats
26
4,535
8.3
4 days ago
dotnet/Open-XML-SDK is an open source project licensed under MIT License which is an OSI approved license.
The primary programming language of Open XML SDK is C#.
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