CiviCRM - A Constituent relationship management for the Civic Sector
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.
WORKetc CRM - All-in-one business management system. CRM + Social + Projects + Billing
Nintex - Cloud-based digital workflow management automation platform
Pipeliner CRM - Pipeliner CRM empowers small to medium-sized sales teams to close more deals and lower risk. Implementation and training are a breeze. Mac & Windows.
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.