There are many alternatives to Pacemaker Editor for Mac and since it's discontinued a lot of people are looking for a replacement. The best Mac alternative is Ableton Live. It's not free, so if you're looking for a free alternative, you could try Mixxx or VirtualDJ. If that doesn't suit you, our users have ranked more than 10 alternatives to Pacemaker Editor and 13 are available for Mac so hopefully you can find a suitable replacement. Other interesting Mac alternatives to Pacemaker Editor are Traktor Pro (Paid), DJ Mixer Pro (Paid), Cross DJ (Freemium) and Serato DJ (Paid).
itDj is a Commercial Dj software (with limited free trial) - (the trial download isn't apparent, on the website, it can be downloaded here: http://www.itdj.com/download) itDj lets you beat-match, scratch and add effects to your music in iTunes and on your Mac.
CuteDJ is the most powerful and versatile DJ software on market. With Professional mix and scratch engine, you can mix your tracks traditionally as well combine and loops in a non-linear way, using it as a powerful live remixing tool.