OnBase - OnBase is an enterprise content management and process management software suite.
Kissflow - Kissflow is a workflow tool & business process workflow management software to automate your workflow process. Rated #1 cloud workflow software in Google Apps Marketplace.
IBM FileNet - Enterprise Content Management platform for large businesses
Nintex - Cloud-based digital workflow management automation platform
Structr - Open-source data CMS platform.
ProcessMaker - ProcessMaker is an easy to use BPM and workflow software solution. It is used to design, automate, and deploy business processes of any kind.