AwaitKit is a powerful Swift library inspired by the Async/Await specification in ES8 (ECMAScript 2017) which provides a powerful way to write asynchronous code in a sequential manner.
Queuer is a queue manager, built on top of OperationQueue and Dispatch (aka GCD).
It allows you to create any asynchronous and synchronous task easily, all managed by a queue, with just a few lines.
Chronos is a collection of useful Grand Central Dispatch utilities. If you have any specific requests or ideas for new utilities, don't hesitate to create a new issue.