I need to parse xlsx file on Linux from .NET Core Console application. However, I couldn't find any library for parsing Microsoft Office files that is supported by .NET Core 5 framework.
Have you taken a look at Excel Data Reader?
There's also a NuGet package if that makes it easier to install.
The API project file doesn't appear to have any COM interop requirements with Office, which is further supported by the existence of Android and Silverlight compatible projects included in the library.