Online-Firmy.cz is a Czech business directory designed to help customers find companies, tradespeople, and specialists nearby. Its searchable listings cover 54 categories, ranging from construction, automotive services, and manufacturing to finance, healthcare, restaurants, accommodation, and gardening. Category pages provide business contact details, addresses, and opening hours, making it easier to identify and reach a suitable provider.

Businesses can create a basic listing for free. To register, they provide their company identification number (IČO); the directory retrieves core details from a registry, and the business can add information for customers. Online-Firmy.cz says listings are checked to confirm the company exists and its contact details work, with profiles published within 24 hours.

For greater visibility, businesses can choose a premium listing, which receives priority placement in its category and search results. Premium profiles can include a verification badge, photo gallery, opening hours, map, social media links, website link, and a contact form that sends enquiries by email. The platform connects customers with businesses across the Czech Republic.