SOnliner is a free Chrome add-on developed by Skliarenko Oleg. It is designed to enhance the browsing experience on the B2B.Onliner.by platform, offering additional features and functionality.

One of the main features of SOnliner is the display of the minimum and maximum prices for each item. If your price matches the minimum, it will be highlighted in green, while if it matches the maximum, it will be highlighted in orange. This allows users to quickly identify the best deals and make informed purchasing decisions.

Another useful addition is the "Info" button in the product adding panel. Clicking on this button provides a brief overview of the product, giving users quick access to important information without having to navigate away from the page.

Please note that after installing the extension, users are provided with a 3-day demonstration access to explore its features. To continue using SOnliner, activation of the extension is required.

Overall, SOnliner is a valuable tool for B2B.Onliner.by users, providing them with additional features to streamline their browsing and purchasing experience.