docassemble - docassemble is a free, open-source expert system for guided interviews and document assembly.
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.
HotDocs - Template-driven, automated document & form assembly software
Pipefy - Pipefy is a process management software that empowers anyone to create and automate efficient workflows on their own without code.
XpressDox - XpressDox Desktop for Microsoft® Office Word is an affordable document assembly system.
Process Street - Create beautiful rich process documents in a simple to follow checklist format. Fast, free and incredibly simple to use.