Ableton has been around since 1999 and is most well known for creating Live software and Push hardware.
Software:
Live 12 Suite by Ableton
Live 12 Suite is the flagship version of Ableton Live.
Live 12 Standard by Ableton
Live 12 Standard is the middle tier option for getting started using Ableton Live.
Live 12 Intro by Ableton
Live 12 Intro is the cheapest option to start using Ableton Live.