SpotBugs: Because it is easy!

Apache Commons Lang, a package of Java utility classes for the classes that are in java.lang's hierarchy, or are considered to be so standard as to justify existence in java.lang. The code is tested using the latest revision of the JDK for supported ...

The Apache Commons IO library contains utility classes, stream implementations, file filters, file comparators, endian transformation classes, and much more.

The Commons Text library provides additions to the standard JDK text handling. It includes algorithms for string similarity and for calculating the distance between strings.

EqualsVerifier can be used in JUnit unit tests to verify whether the contract for the equals and hashCode methods is met.

Valkey and Redis Java client, Real-Time Data Platform. Sync/Async/RxJava/Reactive API.

A headless browser intended for use in testing web-based applications.

RocksDB Java API and Native Libraries

WebDriver compatible driver for HtmlUnit headless browser

Open and Free PDF library. It uses the new package name `org.openpdf`.

Implementation of the JSON Schema Core Draft v4 specification built with the org.json API