Nix.SpreadSheet is LGPL'ed library for generating (and maybe later for reading also) files in Microsoft Excel binary format and OpenDocument format. It's entirely written C# and can be compiled using Microsoft .Net 2.0 or Mono. It also includes Nix.CompoundFile library for writing OLE 2 Compount Document file format.
Use Patent Claims
Include Install Instructions
These details are provided for information only. No information here is legal advice and should not be used as such.