cTRL Server is described as 'cTRL is a server written in Go language that uses a modified version of the NutsDB database, as a backend for a continuous queue of tasks and saving the result of executing commands from given tasks in command interpreters like /bin/bash on servers where this service will be'. There are three alternatives to cTRL Server for a variety of platforms, including Linux, Mac, Windows, iPad and iPhone. The best alternative is xCute. It's not free, so if you're looking for a free alternative, you could try Celery: Distributed Task Queue or Delayed::Job.
Sending commands to a server can be as simple as sending a text message to a friend. Remote SSH asynchronous execution. Results displayed back. Persistent host details. User defined sets for keyword colouring output. Scripts for one touch execution.
Database based asynchronous priority queue system -- Extracted from Shopify - collectiveidea/delayed_job Delayed::Job (or DJ) encapsulates the common pattern of asynchronously executing longer tasks in the background.