Issuetrak - Issue tracking software for help desk and customer service
HubSpot - Grow Better With HubSpot: Software that's powerful, not overpowering. Seamlessly connect your data, teams, and customers on one CRM platform that grows with your business.
Deskun - Deskun is a Help Desk system inside Gmail. It enables you to support customers directly from your mailbox, manage projects, and use free features for Gmail.
MailChimp - MailChimp is the best way to design, send, and share email newsletters.
Kapdesk - Kapdesk offers support teams with a helpdesk software to streamline support tasks.
Marketo - Marketo's powerful marketing automation software helps marketers master the art & science of digital marketing to engage customers and prospects.