Salesflare - Simply powerful CRM. Automates your data to build better relationships and make more sales.
Tall Emu CRM - Tall Emu CRM is built to be customizable and to work the way the business works; and not the other way around.
Streak - Manage customers inside Gmail
Zoho CRM - Omnichannel CRM for Businesses of all sizes
Folk - The next generation contact manager
Mailtrack.io - The best email tracking solution I've found. Free