@harlem/core follows a Vuex-like architecture inspired by Vue.js, where you define your state, mutations, actions, and getters. Overmind, on the other hand, follows a more functional programming approach and provides a more flexible and composable architecture.
Both libraries provide a good developer experience. @harlem/core has a simple and intuitive API, and its integration with React is seamless. Overmind also provides a great developer experience with its powerful Devtools and TypeScript support.
Both libraries are performant and optimized for efficiency. However, Overmind is known for its highly optimized reactivity system, which can provide better performance in certain scenarios.
Community and Ecosystem
Overmind has a larger and more active community compared to @harlem/core. It has a well-maintained ecosystem with various plugins and extensions available. @harlem/core, being a newer library, has a smaller community and ecosystem, but it is growing steadily.
Both libraries have a moderate learning curve. @harlem/core is relatively easier to grasp if you are already familiar with Vuex, while Overmind may require a bit more understanding of functional programming concepts. However, both libraries have good documentation and resources to help developers get started.