* [Prometheus v3.10.0](https://github.com/prometheus/prometheus) – Monitoring system and time series database that collects metrics and triggers alerts based on specified conditions. * [Telegraf v1.38.0](https://github.com/influxdata/telegraf) – Agent for collecting, processing, aggregating, and writing metrics, logs, and other data. * [TimescaleDB 2.25.2](https://github.com/timescale/timescaledb) – PostgreSQL extension for high-performance real-time analytics on time-series and event data. * [QuestDB 9.3.3](https://github.com/questdb/questdb) – High-performance time-series database with fast ingestion and low-latency SQL queries. * [Pyrra v0.9.5](https://github.com/pyrra-dev/pyrra) – SLO management and visualization for Prometheus, with error-budget calculations, burn-rate alerts, and Grafana dashboards. * [Arc v26.03.1](https://github.com/Basekick-Labs/arc) – High-performance DuckDB-based time-series database for Industrial IoT with fast ingestion, sub-second queries, and Parquet storage. * [Graphite-Web 1.2.1-pre2](https://github.com/graphite-project/graphite-web) – Django-based web application that renders graphs and dashboards.