SDL Digital Experience Accelerator CM-side framework (.NET Template Building Blocks)
Portal CMS is a fully featured content management system with a powerful integrated page builder. It is designed for .NET Developers to extend into a bespoke website
Document management system using C# ASP.NET core 2.1 (MVC ) , 3-tier Architechture, EF Code First
mojoPortal is an extensible, cross database, mobile friendly, web content management system (CMS) and web application framework written in C# ASP.NET.
XCLCMS is a lightweight CMS (content management system) background management system, Developed using asp.net MVC, it provides a simple and easy-to-use web API interface and supports multiple applications for a single merchant.
Mr CMS is an open source C# MVC CMS Framework
Reference implementation of Documentum REST .NET (C#) client
Headless CMS and Content Managment Hub
Orchard Core is an open-source modular and multi-tenant application framework built with ASP.NET Core, and a content management system (CMS) built on top of that application framework.