What are the necessary tools for Amazon?

Amazon sellers' tools are roughly divided into several categories, and the commonly used ones are

Keyword tools: such as free and easy-to-use cross-platform multilingual keyword search website, Purple Bird, seller's guide, jungle scout related keywords, anti-competitive traffic words, PPC suggested bidding, etc.

Product selection analysis tools: Google Trends, Jungle Scout, BigTracker, Keepa, Today's Deals, Amazon Daily Promotion, etc.

Collection tools: Worldfirst (owned by Ali), Payoneer(P card), continuous payment and so on.