Summervik Summervik.Common by: Summervik .NET 9.0 This package targets .NET 9.0. The package is compatible with this framework or higher. 490 total downloads last updated 1/16/2026 Latest version: 1.0.0 csharp utilities calendar holidays template phone ssn wages A collection of practical business-oriented C# utilities for calendar, transformations, validators, and more.