You are NOT allowed to remove NPOI logo or Nissl/Neuzilla brand (even text). This is a must of Apache license. This shows basic respects to the previous contributors of NPOI.
You must state that you are using NPOI no matter you are creating a commercial product or an open source project.
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* System Requirement *
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VS2017
VS2013
VS2010 with .NET 2.0 or .NET 4.0
VS2005 or VS2008 with .NET 2.0 Runtime (SP1) (Deprecated)
vs2003 with .NET 1.1 (Deprecated)
VS2015 and above
medium trust environment in ASP.NET
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* Neuzilla on Internet *
* Nissl in social network *
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Homepage on Linkedin: http://www.linkedin.com/company/neuzilla
User Group on Linkedin: http://www.linkedin.com/groups/NPOI-User-Group-6655065