Imjamper 

An easy and reliable way to perform fire-and-forget, delayed and recurring, long-running, short-running, CPU or I/O intensive tasks inside ASP.NET applications. No Windows Service / Task Scheduler required.... More information

.NET Core's Worker Service host support for Hangfire (background job system for ASP.NET applications).

ASP.NET Core support for Hangfire (background job system for ASP.NET applications).