Ghidra is a software reverse engineering (SRE) framework

A browser automation framework and ecosystem.

OpenAPI Generator allows generation of API client libraries (SDK generation), server stubs, documentation and configuration automatically given an OpenAPI Spec (v2, v3)

Zipkin is a distributed tracing system

The ZAP by Checkmarx Core project

Continuous Inspection

An extensible multilanguage static code analyzer.

SpotBugs is FindBugs' successor. A tool for static analysis to look for bugs in Java code.

Cucumber for the JVM

FitNesse -- The Acceptance Test Wiki

Library giving tools to detect N+1 queries and count the queries generated with Spring and Hibernate

Job scheduler