NexFlow Open Source PHP workflow engine
NexFlow is a Workflow Engine and Workflow Editor that allows you to create automated and repeatable series of tasks representing any business process. Workflows are most common in Document Management and the integration of nexForm and nexFlow allow you to route forms for editing and review/approval without any coding. Complex business processes which include parallel approvals and serial grouping of tasks with conditional routing can be modeled. A number of common task functions are available and custom task actions can be created to perform interactive or batch tasks.