Tourism is an economic activity experiencing significant growth. In the modern world, travel agencies play a crucial role in planning and organizing tourist trips. When going on trips, a large number of travelers rely on travel agencies that have the role of travel organizers and offer their products – travel arrangements. The paper explains the concept and division of tourist agencies, as well as their functions and activities. A tourist agency creates and markets its unique product – a tourist package. Since tourists are increasingly looking for products from travel agencies that will satisfy their specific wishes and needs on the trip, the goal of t his paper is to analyze the offer of volunteer tourism products offered by travel agencies. In the chapter on voluntourism, the concept of voluntourism, its advantages and disadvantages and its connection to sustainable tourism are defined. The development of this form of tourism has been driven by the emergence of increasingly conscious tourists who did not want to be part of mass tourism and who seek to find more meaningful and productive forms of travel. In addition to the theoretical context of the business of travel agencies and volunteer tourism, the paper also provides an example of three agencies that sell volunteer tourism products and a proposal for volunteer tourism activities that can be the backbone of volunteer tourism products in the Republic of Croatia. In conclusion, the importance of tourist agencies and the development of volunteer tourism in the modern era will be discussed.