This report provides an overview of third sector organizations, including their definition as voluntary and community firms independent of the government, and their significance in delivering public and social welfare services. It outlines key events that shaped these organizations, such as Oxfam and UNICEF, and their impact on community engagement and policy influence. The report details the types of work these organizations undertake, including community engagement, meeting public needs, and highlighting cases to public services. It also explores various services delivered, such as ambulance, housing, and mental health services, along with examples of organizations providing these services. Furthermore, it discusses the ways in which these organizations partner with public services, the benefits they offer, such as empowering communities and building public trust, and the barriers they face, including funding limitations and location challenges. The report concludes by emphasizing the crucial role of third sector organizations in maintaining and improving the living standards of society through the provision of diverse public services.