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.
MailChimp - MailChimp is the best way to design, send, and share email newsletters.
AMZScout - AMZScout extension will help you make a decision about picking a niche based on the actual data, not intuition.
Marketo - Marketo's powerful marketing automation software helps marketers master the art & science of digital marketing to engage customers and prospects.