I may be heavily biased here. But did you consider agilecrm.com - we offer marketing automation, web analytics, contact management with lot of built-in widgets

I may be heavily biased here. But did you consider agilecrm.com - we offer marketing automation, web analytics, contact management with lot of built-in widgets and support for custom ones, javascript API to create contact and tag them to initiate campaigns for onboarding, 2-way emails, social suite (like hootsuite) but you can import your prospects into crm and nurture them, real-time alerts, scoring of leads etc. http://www.agilecrm.com http://www.agilecrm.com If you are looking for something specific for SaaS, we have a new vertical offering which offers all these but lot more metrics such as CAC, LTV, on boarding popups to guide them based on the user's activity, cohorts, revenue forecasting etc. Give us a haul!