Saleshandy is a cold email platform that helps organizations increase their email outreach operations without sacrificing quality. On Saleshandy, you can send hundreds (or thousands) of campaigns with multi-stage automated follow-up emails to your leads at once. You can use merge tags to customize your email campaigns and have automated follow-ups delivered based on the previous email's interaction (opens or clicks).
InsightSquared - #1 for Salesforce.com Pipeline forecasting, profitability analysis, activity tracking: all the small business intelligence you need. Works using CRM data and automatic syncing.
Gmelius - Gmelius is the first collaboration platform designed for G Suite and your company's daily tools.
Aviso - Aviso provides predictive analytics software to help sales organizations optimize their performance and exceed revenue goals using machine learning algorithms and portfolio management techniques.
Yesware - Sell smarter with email tracking and more
Sidekick by Hubspot - Customer insight integrated with your email tools.
Mailtrack.io - The best email tracking solution I've found. Free