Guava is a suite of core and expanded libraries that include

The Vert.x core APIs contain the backbone for writing Vert.x applications and low-level support for HTTP, TCP, UDP, file ...

Components completing Maven Resolver for utilizing Maven POM and repository metadata.

The application programming interface for the repository system.

A repository connector implementation for repositories using URI-based layouts.

A transport implementation for repositories using file:// URLs.

A transport implementation for repositories using http:// and https:// URLs.

The service provider interface for repository system implementations and repository connectors.

An implementation of the repository system.

A collection of utility classes to ease usage of the repository system.

API for SLF4J (The Simple Logging Facade for Java) which serves as a simple facade or abstraction for various logging ...

Jakarta/Apache commons logging 1.2 implemented over SLF4J

A Java DSL for synchronizing asynchronous operations

JUnit Jupiter is the API for writing tests using JUnit 5.

Rich and fluent assertions for testing in Java