Recent advancements in gel polymer electrolytes for flexible energy storage applications are reviewed, highlighting their potential in batteries and supercapacitors. Gel polymer electrolytes (GPEs), including ionogels, hydrogels, and organogels, offer unique properties such as flexibility, stretchability, self-healing, and mechanical deformation resistance. These properties make them suitable for flexible and wearable electronics. However, challenges remain in achieving high ionic conductivity, electrochemical stability, and mechanical robustness. The review discusses various strategies to tailor GPE properties, including the use of dynamic covalent bonds, self-healing mechanisms, and thermoresponsive materials. Ionogels, in particular, are highlighted for their high ionic conductivity and stability. Recent studies have demonstrated the development of flexible and stretchable ionogels with high conductivity and self-healing capabilities. Hydrogels are also explored for their high ionic conductivity and ability to absorb water, making them suitable for supercapacitors. The review emphasizes the importance of balancing mechanical properties with electrochemical performance to develop efficient GPEs for flexible energy storage systems.Recent advancements in gel polymer electrolytes for flexible energy storage applications are reviewed, highlighting their potential in batteries and supercapacitors. Gel polymer electrolytes (GPEs), including ionogels, hydrogels, and organogels, offer unique properties such as flexibility, stretchability, self-healing, and mechanical deformation resistance. These properties make them suitable for flexible and wearable electronics. However, challenges remain in achieving high ionic conductivity, electrochemical stability, and mechanical robustness. The review discusses various strategies to tailor GPE properties, including the use of dynamic covalent bonds, self-healing mechanisms, and thermoresponsive materials. Ionogels, in particular, are highlighted for their high ionic conductivity and stability. Recent studies have demonstrated the development of flexible and stretchable ionogels with high conductivity and self-healing capabilities. Hydrogels are also explored for their high ionic conductivity and ability to absorb water, making them suitable for supercapacitors. The review emphasizes the importance of balancing mechanical properties with electrochemical performance to develop efficient GPEs for flexible energy storage systems.