# prometheus/alertmanager

> Alertmanager handles alerts from Prometheus: deduplicates, groups, routes them to email, PagerDuty, OpsGenie, Slack or webhooks, and supports silencing and inhibition.

- Magnitude: 0.4 out of 10 — Quiet
- Stars: 8,632 total · +0 stars on 2026-09-29 (UTC), ≈ 0 by evening
- Star trust: star growth looks organic
- Category: DevOps & infrastructure · Language: Go · License: Apache-2.0 · Created: 2013-07-16 · Last push: 2026-09-27
- GitHub: https://github.com/prometheus/alertmanager · Homepage: https://prometheus.io · Page: https://gitnova.dev/en/r/prometheus/alertmanager

## Useful for

- Set up routing of Prometheus alerts to different teams via email or PagerDuty.
- Configure silence rules to mute warnings during planned maintenance.
- Use amtool CLI to query and manage active alerts from the terminal.

## Why it’s here

- A steady background without notable changes.

## Star trust

Star growth looks organic.

Star-trust labels are heuristics based on the repository’s behavior, not a check of every stargazer.

## Numbers

- Forks: 2,474
- Issues and pull requests: 5,509
- Watchers: 169
- Average over the last week: 1 per day
- Usual pace: 2 per day
- Latest release: v0.34.1 (2026-09-17)

## Stars per day, last 30 days (oldest → newest, today is partial)

2026-10-05 … 2026-11-03: None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None

## Magnitude by day, last 12 days

09-18 0.8, 09-19 0.9, 09-20 0.8, 09-21 0.9, 09-22 0.8, 09-23 0.6, 09-24 0.6, 09-25 0.3, 09-26 0.5, 09-27 0.7, 09-28 0.8, 09-29 0.5

---

Magnitude (0–10) measures how fast and how unusually interest in a repository is growing right now. It is not a quality score.
Days are UTC. “So far today” is a fact; “expected by the end of the day” is a forecast.
Summaries and use cases are written by an LLM (DeepSeek V4.1 Flash) from the README and may be inaccurate: verify specific claims (benchmarks, speed, hardware) in the repository itself.
Data as of 2026-09-29 10:48 UTC, updated every 30 minutes.