せどクロ is a free Chrome extension developed by せど副. It falls under the category of Browsers and specifically the subcategory of Add-ons & Tools. This extension adds various features to Amazon product pages to assist sellers in their business.

With せどクロ, users can access a range of functionalities that can be enabled or disabled through the settings. These include:

1. Researching ranking, price, and seller count fluctuation graphs on Amazon.

2. Analyzing the frequency of ranking and seller count changes.

3. Conducting inventory research for each seller.

4. Displaying links to the complete version of the せどりRank on specific Amazon pages, such as the product details page and the inventory management page in the Japanese Seller Central. Please note that the functionality may vary depending on the listing type.

5. Displaying links for listing registration and restriction checks.