Jungle Scout - Amazon product research made easy.
HubSpot - Grow Better With HubSpot: Software that's powerful, not overpowering. Seamlessly connect your data, teams, and customers on one CRM platform that grows with your business.
Inventory Spy - Spy how many products remain on any Amazon Product’s offer listing page.
ActiveCampaign - Integrated email marketing, marketing automation, and small business CRM. Send beautiful newsletters, setup behavioral based automations, and benefit from sales automation.
AMZScout - AMZScout extension will help you make a decision about picking a niche based on the actual data, not intuition.
Pardot - Salesforce B2B marketing automation