Who builds SellerSort

SellerSort is a small, independent tool for one job: putting every product in the right Google product category, and then reading what customers say about it.

The person behind it

SellerSort is built and run by Nguyễn Khả Hợp, a full stack developer based in Hanoi, Vietnam, who also builds GoSign, a document signing platform for Vietnamese businesses. The site went live in September 2026.

Why it exists

Google asks product feeds for a category from a list of 5,595, and that list is hard to search by hand. SellerSort shows the category ID, the full path and how confident the match is. Rows it is unsure about go into a separate file for a person to check, rather than being guessed quietly.

What it costs

Single category lookups are free, up to a daily limit. Bulk catalog mapping and review analysis use prepaid credits, one per row or review, with no subscription. The pricing page has the numbers.

Get in touch

Email support@sellersort.com or use the contact form. A real person reads both. SellerSort is also on LinkedIn.