Javadoc of EasyBPEL is available here.
More precisely:

• Javadoc of EasyBPEL API is here.
• Javadoc of EasyBPEL (Implementation) is here.
• Javadoc of EasyBPEL validator (BPEL 2.0 validation tool) is here.
• Javadoc of EasyBPEL extended activity service is here.
• Javadoc of EasyBPEL Debug extended activity is here.
• Javadoc of EasyBPEL extended activity configuration is here.