Moshi

Moshi is Square's modern, efficient JSON serialization and deserialization library for Java, Kotlin, and Android.

Moshi is a powerful JSON library for the JVM (Java Virtual Machine) and Android, developed by Square (the same team behind Retrofit and OkHttp). It excels at converting JSON payloads directly into Java and Kotlin classes, and vice-versa. Moshi offers two key modes: runtime reflection or a KAPT-backed code generation option, which eliminates reflection overhead for superior performance and smaller binary size. Its API is intentionally smaller than alternatives like Gson, focusing on type safety and simplicity for developers building robust applications.

https://github.com/square/moshi