Squidex is an open source headless CMS and content management hub.
We build it with ASP.NET Core and CQRS and is tested for Windows and Linux on modern browsers. 

Free, open source and cross-platform CMS based on ASP.NET Core and ExtCore framework 

Open Source Content Management System built with ASP.NET Core on top of Modular and Extensible Application Framework 

Lynicon CMS for ASP.Net Core (.Net Standard 1.6, .Net 4.6). Now we believe the most powerful CMS on .Net Core. 

AspNetCoreRateLimit is an ASP.NET Core rate limiting solution designed to control the rate of requests that clients can make to a Web API or MVC app based on IP address or client ID. The AspNetCoreRateLimit package contains an IpRateLimitMiddleware and a ClientRateLimitMiddleware, with each middleware you can set multiple limits for different scenarios like allowing an IP or Client to make a maximum number of calls in a time interval like per second, 15 minutes, etc. You can define these limits to address all requests made to an API or you can scope the limits to each API URL or HTTP verb and path.

R4MVC is a Roslyn code generator for ASP.NET MVC Core apps that creates strongly typed helpers that eliminate the use of literal strings in many places.

It is a re-implementation of T4MVC for ASP.NET Core projects. 

ASP.NET Core 2.0 Features