jOOλ - The Missing Parts in Java 8 jOOλ improves the JDK libraries in areas where the Expert Group's focus was elsewhere. It adds tuple support, function support, and a lot of additional functionality around sequential Streams. The JDK 8's main efforts (default methods, lambdas, and the Stream API) were focused around maintaining backwards compatibility and implementing a functional API for parallelism.
A Java wrapper to run Spring, Spring Boot, Jersey, and other apps inside AWS Lambda.
Nessie: Transactional Catalog for Data Lakes with Git-like semantics
Advanced manager and monitor for Apache Tomcat, forked from Lambda Probe
A modern, lambda-friendly, 120 character Java formatter.
Yet Another Validation for Java (A lambda based type safe validation framework)
Official mirror for interface definitions and helper classes for Java code running on the AWS Lambda platform.