Simple and extensible monitoring agent / library for Kubernetes: https://gravitational.com/blog/monitoring_kubernetes_satellite/
Beats - Lightweight shippers for Elasticsearch & Logstash
The plugin-driven server agent for collecting & reporting metrics.
extract whitebox monitoring data from application logs for collection in a timeseries database
Like Prometheus, but for logs.
Zero Allocation JSON Logger
Logs for humans to read.
Cloud Native Logging
A high-performant Logging Foundation for Go Applications. X3 faster than the rest leveled loggers.