The new TCALoader tool enables mobile operators and application developers to download, install and manage applications on the UICC / eUICC to test interoperability across different deployments. This supports increasing industry demand for the delivery of various services through eSIM technology. The TCALoader is an evolution of the CAT Loader tool. This was first released by SIMalliance in 2007 (which became the TCA in 2020) and has been widely used by mobile operators and application developers to test and implement new services. The TCALoader introduces enhanced features to support different SIM form factors such as eSIM and integrated SIM, meet latest industry standards, support new protocols and increase security.