TOPX is an online SEO marketplace operated by SEO Solutions, offering self-service packages for link building and web publication. Its platform lets customers compare products before purchase, with details such as the number of websites, domain groups, publication types, project limits, prices, and available statistics. The offer includes business NAP listings, website directory submissions, links from homepages, and links placed in category sections. Packages and discounted bundles are activated using funds added to a customer account, while a free welcome package is available for testing the panel.

After activation, customers create a project, provide the information required for the selected service, and follow progress through their account. Completed work is recorded in reports that include publication addresses; the exact report scope depends on the package. TOPX presents service parameters rather than promising specific Google rankings. The platform also provides SEO tools, FAQs, a blog, customer support, and account documentation. Founded in 2019, TOPX emphasizes transparent pricing, clear package terms, and online management of purchases and reporting.