Idle Master, in comparison, no longer appears to be supported.
It also gets more updates and support to its open source code, so it’s the pick of the two and more popular with the Steam card community these days. Archi Steam Farm doesn’t require the Steam client running to be active, and supports multiple accounts. If the idea of a VAC ban unnerves you, Archi Steam Farm (ASF) avoids Steam Idle Master’s occasional VAC issues by using a different mechanism to trigger card drops. Steam Idle Master documentation and FAQs warn of VAC errors if you run the utility along with a secured game simultaneously, so make sure you close out of it and then exit Steam completely before reopening Steam and playing any games protected by SteamGuard. It’s not clear what Valve thinks of this practice, but people have been using Steam idle utilities for years with few issues. Which should you use? We'll lay out the details below, but we recommend Archi Steam Farm for your card collecting needs.