Collaboration environments enable researchers from mutliple institutions to create distributed collections, and share both data and workflows. I will demonstrate use of the iRODS integrated Rule Oriented Data System to build a data grid. Examples of communities using the technology range from the Ocean Observatory Initiative, to the National Climatic Data Center, to the NASA Center for Climate Simulation. Example applications include the automation of processing pipelines, enforcement of management policies, automation of administrative tasks, and validation of assessment criteria. Groups build digital libraries and preservation environments by applying appropriate policies and procedures. The iRODS data grid provides the mechanisms needed to support reproducible science, share analyses, and compare results across different versions of a workflow.