Email Verification on Google Sheets - An add-on for email verification directly in Google Sheets
Vtenext - Vtenext is a platform that allows you to tackle CRM processes and customers with great ease.
Sheetlist - Discover free Google Sheets for marketing, finance and more
Taimer - Taimer is a PSA solution designed for service companies to reduce the hassle in their work, get paid quickly, and sell more.
Clearbit Salesforce Prospector - Quickly build targeted lead lists directly in Salesforce
Sales Creatio - Out-of-the-box processes to close more deals