pg_activity is a top like application for PostgreSQL server activity monitoring.

Obtain (wildcard) certificates from let's encrypt using dns-01 without the need for API access to your DNS provider.

Tracetest is a OpenTelemetry based tool that helps you develop and test your distributed applications. It assists you in the development process by enabling you to trigger your code and see the trace as you add OTel instrumentation. It also empowers you to create trace-based tests based on the data contained in your OpenTelemetry trace. You can verify against both the triggering transactions response AND any of the information contained deep in a span in your trace.

k8spacket - packets traffic visualization for kubernetes

BindPlane OP is an open source observability pipeline that gives you the ability to collect, refine, and ship metrics, logs, and traces to any destination. BindPlane OP provides the controls you need to reduce observability costs and simplify the deployment and management of telemetry agents at scale.

How Slack increased developer productivity and prevented cascading internal failures by implementing orchestration-level circuit breakers

gProfiler is a system-wide profiler, combining multiple sampling profilers to produce unified visualization of what your CPU is spending time on.

CLI tool and python library that converts the output of popular command-line tools, file-types, and common strings to JSON, YAML, or Dictionaries. This allows piping of output to tools like jq and simplifying automation scripts.