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.
Truecaller - Find a person by a name or phone number worldwide for free using Truecaller.
MailChimp - MailChimp is the best way to design, send, and share email newsletters.
FullContact Card Reader - Automagically scan biz cards into LinkedIn/Gmail contacts
Marketo - Marketo's powerful marketing automation software helps marketers master the art & science of digital marketing to engage customers and prospects.
Google Contacts - Google Contacts is Google's contact management tool that is available in its free email service Gmail, as a standalone service, and as a part of Google's business-oriented suite of web apps Google Apps.