guava vs MapStruct: What are the differences?
guava: Google Core Libraries for Java 6+. The Guava project contains several of Google's core libraries that we rely on in our Java-based projects: collections, caching, primitives support, concurrency libraries, common annotations, string processing, I/O, and so forth; MapStruct: A Java code generator for creating fast and type-safe bean mappings at compile time. It is a code generator that greatly simplifies the implementation of mappings between Java bean types based on a convention over configuration approach. The generated mapping code uses plain method invocations and thus is fast, type-safe and easy to understand.
guava and MapStruct can be categorized as "Java" tools.
guava and MapStruct are both open source tools. It seems that guava with 33.7K GitHub stars and 7.52K forks on GitHub has more adoption than MapStruct with 2K GitHub stars and 330 GitHub forks.