EPPlus Software AB is a Swedish software company that builds, distributes and provides support for EPPlus, a spreadsheet library for the Microsoft .NET platform with over 40 million downloads on Nuget. The development of EPPlus is done in a public repository on github, with new versions released frequently. EPPLus was asked to provide input on proposed changes to the Office Open XML standard and in 2019 Microsoft used EPPlus to demonstrate their new Blazor Web Assembly framework at various developer conferences. Thousands of companies and organizations depend on EPPlus for managing their spreadsheet data every day.