IBM has been a long-supporter of BPEL, and numerous IBM products support BPEL as well.

WebSphere® Process Server

http://www-306.ibm.com/software/integration/wps/
WebSphere Process Server helps deliver an SOA infrastructure that provides one common model to orchestrate, mediate, connect, map, and execute the underlying IT functions. With this, WebSphere Process Server simplifies integration of business processes by leveraging existing IT assets as reusable services, but without the complexities associated with traditional integration methodologies.