Apollo.io: Find B2B Contact Info for Free is a Chrome extension that allows users to find contact information, connect with buyers, track emails, and more. With this extension, users can access verified contact data and engage instantly on popular platforms such as LinkedIn, Gmail, Google Calendar, and Salesforce. It offers features such as LinkedIn prospecting and automation, web page layering, Google Calendar integration, Gmail integration, and Salesforce integration. The extension is free to start and provides access to the world's largest B2B database, along with tools to automate workflow and increase pipeline and revenue.