Indexfirm is a Polish business directory operated by Sport-Premium Sp. z o.o., bringing together contact details and listings for companies, public offices, and institutions. Users can search by organization or product name, keywords, industry, service, location, street, region, or postal code. The directory covers a broad range of sectors, including professional services, retail and wholesale, manufacturing, environmental products, sport and recreation, health and beauty, education and culture, and government institutions.

Businesses can create a basic listing containing essential company information, or choose promotional packages and banner advertising to showcase their company, products, and services. The site also offers management-panel tools and an editor to update listings or manage campaigns. Its categorized listings include businesses such as retailers, manufacturers, service providers, schools, medical institutions, associations, and public agencies. Indexfirm presents itself as a resource for finding organizations across Poland and for helping businesses promote their offerings. The website also includes a job and cooperation notice seeking experienced sales representatives for a company in the advertising sector.