OLLBIG is a free online classifieds platform and marketplace serving Russia and the CIS. It connects private sellers, buyers, service providers, and small businesses, offering a place to publish listings and discover products and services across a wide range of categories. Users can search by city and item or service, browse recent and popular advertisements, and contact advertisers directly using the details provided in each listing.

The platform features property for sale or rent, jobs, cars and spare parts, commercial and industrial equipment, household goods, clothing, electronics, and leisure items. Its service listings include transport, repairs, construction, beauty and wellness, and other professional offerings. Businesses and individuals can post advertisements without charge, while registered users can manage their accounts, edit listings, and save favourites. OLLBIG presents itself as an alternative to paid or restricted classifieds services, emphasizing free publication and open access. By bringing local offers together in one searchable marketplace, it helps users promote goods and services and find opportunities in communities throughout Russia and the CIS.