sellerboard is an accurate profit analytics service with additional tools: follow-up mail campaigns, inventory management, reimbursements for lost & damaged stock and other FBA errors, PPC optimizer, listing change alerts and much more. All that for a competitive price, starting from $15 a month.
Toggl - Toggl is an online time tracking tool. It features 1-click time tracking and helps you see where your time goes. Free and paid versions are available.
Helium 10 - Our software contains multiple Amazon seller tools to help you find high ranking keywords, identify trends, spy on competitors, & optimize product listings.
Harvest - Simple time tracking, fast online invoicing, and powerful reporting software. Simplify employee timesheets and billing. Get started for free.
Jungle Scout - Amazon product research made easy.
RescueTime - Time management software that shows you how you spend your time & provides tools to help you be more productive.
AMZScout - AMZScout extension will help you make a decision about picking a niche based on the actual data, not intuition.