a .NET library that can read/write Office formats without Microsoft Office installed. No COM+, no interop.
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Latest commit 6829fb0 Oct 11, 2018



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This project is the .NET version of POI Java project. With NPOI, you can read/write Office 2003/2007 files very easily.

Support and Service

Neuzilla is the studio behind NPOI.
To follow us, please visit http://www.linkedin.com/company/neuzilla

We are going to provide .NET core version in Oct, 2018.

Advantage of NPOI

a. It's totally free to use
b. Cover most features of Excel (cell style, data format, formula and so on)
c. Professional support service (even 24*7) from NPOI team (not free)
d. Support xls, xlsx, docx.
e. Designed to be interface-oriented (take a look at NPOI.SS namespace)
f. Support not only export but also import
g. .Net 2.0 based even for xlsx and docx (though we also support .NET 4.0)
h. Real successful cases all over the world
i. huge amout of basic examples

How to join

If you have passion to contribute code, please contact tony.qu@neuzilla.com

Neuzilla on SNS

Linkedin Group: http://www.linkedin.com/groups/Neuzilla-User-Group-6655065
Twitter: http://twitter.com/tonyqus
QQ Group: 20144214
Email: support@neuzilla.com

System Requirement

VS2010 with .NET 4.0 runtime
VS2005 or VS2008 with .NET 2.0 Runtime (SP1)