Highsoft
Highsoft is the company behind the Highcharts Javascript charting library, and its siblings Highcharts Stock, Highcharts Maps and Highcharts Gantt.
Highcharts is a multi-platform charting library that makes it easy for developers to add interactive charts to web and mobile projects of any size.
80% of the 100 largest companies in the world use Highcharts, and over 50,000 companies, across industries such as application development, publishing, data science, and finance.
Highcharts has been in active development since 2009 and remains a developer favorite due to its robust feature set, ease of use, thorough documentation, accessibility compliance, and vibrant community.
EPPlus Software
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.