Trello for Slack - Organize anything with anyone, inside Slack
Shortwave - Email smarter & faster with a reinvented experience for your Gmail
Intercom - Intercom is a customer relationship management and messaging tool for web businesses. Build relationships with users to create loyal customers.
Gmail Add-ons - Work with your favorite business apps directly in Gmail
Halp - Slack-first ticketing for internal helpdesk
Email Studio for Gmail - Send personalized emails, schedule emails directly in Gmail