Extism aims to make WebAssembly (Wasm) easier to use by streamlining the developer experience across languages and platforms. While Wasm allows programs to run almost anywhere, it can be difficult to harness its power due to the differences in language platforms and the challenge of communicating with guest Wasm programs. Extism solves these issues by providing host SDKs in multiple languages and abstracting away the complexities of Wasm, such as memory management and communication between the host and Wasm. Extism also supports specifications like WASI and plans to integrate new standards as they emerge. With Extism, developers can easily pass complex data like strings between Wasm and the host program. While traditional Wasm programming requires manual memory management, Extism handles memory allocation and deallocation efficiently. Extism is also versatile, allowing developers to work with various data types like strings, JSON, Protobuf, and raw binary. The Extism Plugin Development Kit (PDK) provides constructs for input, output, errors, memory, and more. Extism abstracts the initialization of the Wasm runtime, making it easy to swap runtimes without major changes. As the primary maintainers of Extism, Dylibso keeps up with the latest Wasm specifications and ensures
https://dylibso.com/blog/why-extism/