* [Prometheus v3.12.0](https://github.com/prometheus/prometheus) – Monitoring system and time series database that collects metrics and triggers alerts based on specified conditions.

* [sitespeed.io v41.2.0](https://github.com/sitespeedio/sitespeed.io) – Comprehensive web performance tool for measuring, monitoring, and optimizing website speed.

* [OpenTelemetry-Go v1.44.0](https://github.com/open-telemetry/opentelemetry-go) – Go implementation of OpenTelemetry for measuring software performance and behavior.

* [Coroot v1.21.0](https://github.com/coroot/coroot) – Observability tool that transforms application data into actionable insights.

* [Kibana v9.4.2](https://github.com/elastic/kibana) – Browser-based analytics and search dashboard for Elasticsearch.

* [OpenTelemetry Collector v0.153.0](https://github.com/open-telemetry/opentelemetry-collector) – Vendor-agnostic implementation for receiving, processing, and exporting telemetry data.

* [NumKong v7.7.0](https://github.com/ashvardanian/NumKong) – Mixed-precision numeric library providing SIMD-accelerated dot products, matrix operations, and geometric kernels across many precisions, architectures, and language bindings.

* [Prometheus Valkey & Redis Metrics Exporter v1.84.0](https://github.com/oliver006/redis_exporter) – Prometheus exporter exposing Valkey and Redis-compatible metrics for monitoring multiple Redis instances.

* [Grafana Mimir mimir-3.1.0](https://github.com/grafana/mimir) – Scalable long-term storage solution for Prometheus with high availability and multi-tenancy features.

* [GitHub Exporter v14.1.0](https://github.com/promhippie/github_exporter) – Prometheus exporter collecting GitHub metrics for monitoring.

* [WakaTime CLI v2.15.0](https://github.com/wakatime/wakatime-cli) – Command-line interface for official text editor plugins to record and send coding activity.

* [HyperDX @hyperdx/otel-collec...](https://github.com/hyperdxio/hyperdx) – Observability platform that centralizes logs, metrics, traces, exceptions, and session replays for production issue resolution.

* [OpenLLMetry-JS 0.27.0](https://github.com/traceloop/openllmetry-js) – Extensions for complete observability of LLM applications using OpenTelemetry.

* [StatsD exporter v0.30.0](https://github.com/prometheus/statsd_exporter) – Receives StatsD-style metrics and exports them as Prometheus metrics for scraping.

* [OpenObserve v0.90.3](https://github.com/openobserve/openobserve) – Modern observability platform for logs, metrics, traces and frontend monitoring with high performance and low storage costs.

* [BetterDB Monitor v0.22.0](https://github.com/BetterDB-inc/monitor) – Real-time monitoring, slowlog analysis, and audit trails for Valkey and Redis.

* [Hitimes v3.2.0](https://github.com/copiousfreetime/hitimes) – Fast, high-resolution timer library for recording performance metrics.

* [Pulse v5.1.34](https://github.com/rcourtman/Pulse) – Lightweight monitoring application for Proxmox VE that displays real-time status for VMs and containers via a web interface.

* [carbon-relay-ng v1.5.15](https://github.com/grafana/carbon-relay-ng) – High-performance carbon stream relay and aggregator with runtime admin interfaces, validation, spooling, and support for multiple outputs.

* [F5 NGINX Agent v3.10.3](https://github.com/nginx/agent) – Companion application for remote management, configuration, and real-time metrics collection from NGINX instances.

* [OpenTelemetry Ruby opentelemetry-semant...](https://github.com/open-telemetry/opentelemetry-ruby) – Ruby client for OpenTelemetry that provides API and SDK functionality.

* [Mprove app-12.0.19](https://github.com/mprove-io/mprove) – Business intelligence platform centralizing metrics and dashboards, powered by Malloy.

* [analyze-css v2.4.40](https://github.com/macbre/analyze-css) – CSS selectors complexity and performance analyzer providing detailed metrics and offender reports.

* [Traceway backend/v1.7.28](https://github.com/tracewayapp/traceway) – OpenTelemetry-native observability platform that unifies traces, logs, metrics, session replay, exceptions, and AI telemetry via OTLP/HTTP ingest.