Top 20 NuGet continuations Packages
Provides a single-threaded synchronization context, which makes it easy to reason about asynchronous code in environments that don't usually provide a synchronization context (for example, console applications).
Job pipeline execution based on Hangfire.io, sequences multiple parallel or blocking jobs with continuations
Unitysync.Async is a library of extension methods that lets you preform async continuations on Task/Task<T> Types. Allowing you to non-blockingly call async methods on the Unity3D main thread and continue on the Unity3D main thread when the Task/Task<T> is completed.