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.
Bitrix24 - Bitrix24 is a free (for small businesses) social enterprise platform. It is a united work space which handles the many aspects of daily operations and tasks. Create your own social intranet in minutes!
Helium 10 - Our software contains multiple Amazon seller tools to help you find high ranking keywords, identify trends, spy on competitors, & optimize product listings.
VOGSY - Professional service automation tool built on Google G Suite
Jungle Scout - Amazon product research made easy.
Office Timesheets - Professional Services Automation
AMZScout - AMZScout extension will help you make a decision about picking a niche based on the actual data, not intuition.