Secret management toolchain from the Elastic team.
Documenting your Threat Models with HCL.
SimuLand is an open-source initiative by Microsoft to help security researchers deploy lab environments that reproduce well-known techniques used in real attack scenarios, actively test and verify effectiveness of related Microsoft 365 Defender, Azure Defender and Azure Sentinel detections, and extend threat research using telemetry and forensic artifacts generated after each simulation exercise.
kstatus provides tools for checking the status of Kubernetes resources. The primary use case is knowing when (or if) a given set of resources has been fully reconciled after an apply operation.