This comprehensive review by Yazdani McCord and Baniasadi explores the advancements in form-stabilized phase change materials (PCMs), focusing on stabilization mechanisms, multifunctionalities, and applications. PCMs are highly attractive for thermal energy storage due to their ability to store energy as latent heat while maintaining a nearly constant temperature. However, their susceptibility to leakage and fluidity in the melt state has been a significant challenge. The review evaluates various stabilization methods, including encapsulation, porous supports, and polymeric hybridization, to address these issues and enhance the performance of form-stabilized PCMs. Encapsulation methods, such as physical, chemical, and physicochemical techniques, are effective in creating protective shells around PCM droplets, preventing leakage and maintaining integrity during phase transitions. Porous materials, like metal foams, expanded graphite, and graphene aerogels, are used to confine PCMs, improving thermal durability, conductivity, and stability. Polymeric hybridization involves blending PCMs with polymers, enhancing mechanical strength and thermal performance while reducing the need for complex encapsulation processes. The review also highlights the multifunctional applications of form-stabilized PCMs, including self-healing, self-cleaning, fire-retardancy, and enhanced electrical and thermal conductivity. These properties make PCMs versatile for various applications, such as solar energy storage, building envelopes, textiles, biomedical devices, and electronics. The integration of PCMs into these applications promises advancements in energy efficiency, thermal comfort, and sustainable design. In the context of building applications, form-stabilized PCMs can significantly enhance energy efficiency and thermal comfort. They are used in building envelopes, floor radiant heating, and other construction materials to reduce energy consumption and promote a healthier indoor environment. The review provides detailed insights into the development and performance of form-stabilized PCMs, emphasizing their potential to revolutionize various sectors and contribute to a greener future.This comprehensive review by Yazdani McCord and Baniasadi explores the advancements in form-stabilized phase change materials (PCMs), focusing on stabilization mechanisms, multifunctionalities, and applications. PCMs are highly attractive for thermal energy storage due to their ability to store energy as latent heat while maintaining a nearly constant temperature. However, their susceptibility to leakage and fluidity in the melt state has been a significant challenge. The review evaluates various stabilization methods, including encapsulation, porous supports, and polymeric hybridization, to address these issues and enhance the performance of form-stabilized PCMs. Encapsulation methods, such as physical, chemical, and physicochemical techniques, are effective in creating protective shells around PCM droplets, preventing leakage and maintaining integrity during phase transitions. Porous materials, like metal foams, expanded graphite, and graphene aerogels, are used to confine PCMs, improving thermal durability, conductivity, and stability. Polymeric hybridization involves blending PCMs with polymers, enhancing mechanical strength and thermal performance while reducing the need for complex encapsulation processes. The review also highlights the multifunctional applications of form-stabilized PCMs, including self-healing, self-cleaning, fire-retardancy, and enhanced electrical and thermal conductivity. These properties make PCMs versatile for various applications, such as solar energy storage, building envelopes, textiles, biomedical devices, and electronics. The integration of PCMs into these applications promises advancements in energy efficiency, thermal comfort, and sustainable design. In the context of building applications, form-stabilized PCMs can significantly enhance energy efficiency and thermal comfort. They are used in building envelopes, floor radiant heating, and other construction materials to reduce energy consumption and promote a healthier indoor environment. The review provides detailed insights into the development and performance of form-stabilized PCMs, emphasizing their potential to revolutionize various sectors and contribute to a greener future.