A suite of Monitoring Plugins (formerly known as nagios-plugins)
The x-ui simplified and modified version of the script
A list of SaaS, PaaS and IaaS offerings that have free tiers
Distributed Tracing, Metrics and Context Propagation for applications
Practical and document place for DevOps toolchain
Sample applications for Google Kubernetes Engine (GKE)
AWS zero to hero repo for devops engineers to learn AWS in 30 Days
Windows support for Node.JS scripts (daemons, eventlog, UAC, etc).
Monitor your websites, showcase status including daily history
Java libraries for buiding IIOP and Web Services
Monitorable, gracefully restarting, self-upgrading binaries in Go
Latency and Fault Tolerance for Distributed Systems