What's a good "business process management" (BPM) software for mapping and automating our workflows?

We ask the same underlying question in different ways.

• What's a good "business process management" (BPM) software for mapping and automating our workflows?
• What are the best solutions for documenting business processes and setting up automated workflows?
• I'm looking for BPM software to help us document our processes and set up automated workflows. What options should I consider?