ASF is a C# application with primary purpose of idling Steam cards from multiple accounts simultaneously. Unlike Idle Master which works only for one account at given time, while requiring Steam client running in the background and launching additional processes imitating "game playing" status, ASF doesn't require any Steam client running in the background, doesn't launch any additional processes and is made to handle unlimited Steam accounts at once. In addition to that, it's meant to be run on servers or other desktop-less machines, and features full cross-OS support, which makes it possible to launch on any operating system with .NET Core runtime, such as Windows, Linux and OS X. ASF is possible thanks to gigantic amount of work done in marvelous SteamKit2 library.
Today, ASF is one of the most versatile Steam power tools, allowing you to make use of many features that were implemented over time. Apart from idling Steam cards, which remains the primary focus, ASF includes bunch of features on its own, such as a possibility to use it as Steam authenticator or chat logger. In addition to that, ASF includes plugin system, thanks to which anybody can further extend it to his/her needs.
For learning about even more ASF features, we recommend starting with our FAQ entry.
Detailed guide regarding setting up and using ASF is available on our wiki in setting up section. It's user-friendly guide that shows basic, as well as a bit more complex ASF setup, covering all the required dependencies and other steps that are required in order to start using ASF software.
ASF officially supports Windows, Linux and OS X operating systems, but it can work anywhere where you can obtain working .NET Core runtime. Please visit compatibility section on the wiki for more information regarding environments that ASF can work in.
Our wiki includes a lot of other articles that will tell you about everything in regards to ASF, as well as show you other features that you can make use of. If you have some time to spare and you'd like to find out what else ASF can do for you, we heavily encourage you to take a look!