NPOI
A .NET library for reading and writing Office formats (Excel, Word) without requiring Microsoft Office installation.
What is NPOI?
NPOI is a .NET library that allows developers to read, write, and manipulate Microsoft Office file formats—specifically Excel spreadsheets and Word documents—without requiring Microsoft Office to be installed. It solves the problem of server-side Office automation by eliminating dependencies on COM+ or Office interop, enabling reliable document processing in cross-platform environments.
.NET developers building applications that need to generate reports, import data from spreadsheets, or automate Office document creation in environments where Microsoft Office is not available or practical.
Developers choose NPOI because it provides a fully managed, free alternative to Microsoft Office automation, with comprehensive format support, cross-platform compatibility, and a proven track record in production systems worldwide.
Overview
a .NET library that can read/write Office formats without Microsoft Office installed. No COM+, no interop.
Use Cases
Best For
- Generating Excel reports in ASP.NET web applications
Related Projects
Found a gem we're missing?
Open-Awesome is built by the community, for the community. Submit a project, suggest an awesome list, or help improve the catalog on GitHub.
