LinkBuilder.com

Based in Praha 8, LinkBuilder.com operates as an online platform rather than a traditional client-facing agency, aggregating pricing data for guest posts, sponsored content, and media placements from a large number of marketplaces and publisher networks worldwide. Its user base consists of SEO professionals, PR teams, and marketers who need to compare costs for backlinks, brand mentions, and editorial placements across websites, blogs, and media outlets in many countries. The company was founded in 2021 and operates with a small team of up to ten people. The core offering is a searchable database that lets users check guest post and sponsored content prices for individual domains or run bulk searches across multiple sites, supported by filters and sorting options to narrow results by country and other criteria. Alongside the price aggregator, the site lists a broader set of link-building services, including guest posting, niche edits, profile backlinks, crowd links, submission links, contextual backlinks, white-label link building, PBN building, HARO links, digital PR, and Quora links, as well as SEO copywriting and Google indexing services. Additional tools mentioned include a free website audit, a competitor analysis feature, an SERP scanner, and a browser extension for Chrome and Firefox that allows users to check backlink prices while browsing websites directly. The company also maintains resources such as a blog, a knowledge base, and case studies, and offers support through online chat and direct contact channels.