docassemble - docassemble is a free, open-source expert system for guided interviews and document assembly.
Lotame - Make your data actionable, learn about your most valuable customers, improve ROI by targeting the right audience and increase relevance across screens.
HotDocs - Template-driven, automated document & form assembly software
Adobe Audience Manager - Adobe Audience Manager is a data management platform that integrates online and offline data to deliver a unified view of all your audiences
Woodpecker - Legal document automation for solo & small firms. Simple to use, works in Word, connects to everything.
Google Audience Center - 3 votes and 6 comments so far on Reddit