NOMZ Studios has released "StemMaster," a stem mixing and mastering software for Windows. Unlike conventional mastering software that typically processes a finished stereo mix or a handful of submix stems, StemMaster supports stem-level functionality. It loads the complete multitrack stems and makes mixing decisions first, such as levels, panning, and per-track automation, before mastering to a true-peak-limited, loudness-targeted finish. Every step of the process is logged in an "Engine Notes" panel, showing which track was adjusted, by how much, and why, so users can review it. Manually adjusting a fader or pan triggers a fast re-render that holds the loudness target, and A/B comparisons are always kept loudness-matched. StemMaster is available as a one-time purchase for $69, with a free demo version offering limited export also available. More information can be found on the NOMZ Studios website.