SendX.io - SendX (https://sendx.io) provides remarketing and retargeting tools for web businesses. You can use popups, landing pages, email, web push notification, automation workflows and FB / Google retargeting to drive more revenue.
Promoter - The Most Effective Way To Engage And Learn From Customers
Nova Inbox - Personalize emails in seconds, right from your inbox
Open Loyalty for Startups - Open source stack for building customer focused products
Mailblast - Email marketing on a budget using Amazon SES
HelpCrunch - HelpCrunch Live Chat: Turn prospects into customers, drive sales and improve retention with a rich toolbox combining modern live chat, in-app messenger, email marketing, CRM and marketing automation.