In this talk, we present an open-source framework to develop heterogeneous, distributed enclaved applications. The main feature of our framework is to provide a high level of abstraction over the platform-specific TEE layer and over the secure communication between different modules, leaving to a developer only the task to write the application’s logic. We provide a notion of event-driven programming to develop distributed enclave applications in Rust and C for heterogeneous TEEs, including Intel SGX, ARM TrustZone and the open-source Sancus. This heterogeneity brings our work to a broad range of use cases, which include cloud processing, mobile devices and lightweight IoT. Our framework ensures strong security guarantees based upon mutual attestation of security-critical software components.