Just to plug my own Rails SaaS framework: http://github.com/maccman/saasy http://github.com/maccman/saasy == Features * No local credit card storage * Automa

Just to plug my own Rails SaaS framework: http://github.com/maccman/saasy http://github.com/maccman/saasy == Features * No local credit card storage * Automated billing script that should be run nightly * Configurable subscription plans (price/duration) * SSL protection for account creation (and when updating CC info) * Account can have multiple users, interface for adding more * Trial ending mailer * Invoice mailer * Automated notification and retry of failed renewals * Plan upgrade/downgrades * PDF invoices * OpenID support * Shared secret SSO * Credit card verification * REST API for users and subscriptions