Pega or PegaRULES Process Commander (PRPC) is a BPMS developed by PegaSystems
Pega PRPC(Pega Rules Process Commander) Also known as BPM(Business Process Management) Tool is a proprietary bpms suite, a market leader for many years, according to Gartner. Most of the users are from Finance, Insurance or Medical domains.
Its a java app, which runs on any standard server (like tomcat) and supports most of the common sql RDBMS. It offers visual editors for almost everything (processes, business rules, gui, users, services, connectors to various systems), instant propagation of changes, and its own versioning system.
See http://www.pega.com for more details or better community.pega.com for the Pega Developer Network.
The first level of certification in Pega is CSA - Certified System Architect. After that you can proceed with CSSA - Certified Senior System Architect.