Open Source BPEL Engine
Via Paul Brown: ActiveBPEL, an open source BPEL implementation distributed under a dual license model (both GPL and commercial).
This is a single archived entry from Stefan Tilkov’s blog. For more up-to-date content, check out my author page at INNOQ, which has more information about me and also contains a list of published talks, podcasts, and articles. Or you can check out the full archive.