Nomad
Nomad is a lightweight workload orchestrator. It offers client instance scaling as well as workload scaling.
linux windows osx open-source virt orchestration go
PowerShell Desired State Configuration
DSC is a new management platform in Windows PowerShell that enables deploying and managing configuration data for software services and managing the environment in which these services run.
linux windows powershell open-source commercial config-mgmt
Serf
Serf is a service discovery and orchestration tool which is highly decentralized, highly available, fault tolerant, cross platform and extremely lightweight.
linux windows osx open-source orchestration go
testssl.sh
A command-line tool which checks a server's service on any port for the support of TLS/SSL ciphers, protocols as well as some cryptographic flaws. It's designed to provide clear output for your "is this good or bad" decision.
linux osx open-source security shell