Estimated reading time: 1 minute
Kotlin provides two killer features: multiplatform projects (including common projects) and coroutines. But multiplatform doesn’t provide any special functionality, only let’s you to use the exposed APIs from each platform. And coroutines are low-level too.
These libraries expose a common standard API for multiplatform projects: exposing atomic operations working in all platforms, providing coroutine-aware asynchronous tools, or being able to serialize and deserialize from one platform to another.
Kotlinx.* (Kotlin eXtensions) libraries are OpenSource and you can find them at https://github.com/Kotlin/