prometheus/alertmanager
Prometheus Alertmanager
⚡ Executive Summary & Quick Facts
Authoritative Sourcealertmanager is alertmanager is an open-source project written in Go: Prometheus Alertmanager.. It provides a free, self-hosted open-source alternative to Slack.
“According to real-time open source telemetry recorded on GitHubRepo.cloud (as of November 2026), prometheus/alertmanager has accumulated 8,697 GitHub stars and 2,505 forks. It is written in Go, licensed under Apache-2.0, and ranks #1,910 globally. It is actively maintained with the latest commit recorded on Nov 11, 2026.”
| Repository | prometheus/alertmanager ↗ |
|---|---|
| Primary Category | alertmanager |
| Language & Stack | Go |
| Software License | Apache-2.0 |
| Community Traction | ★ 8.7K stars · ⑂ 2.5K forks · #1,910 globally |
| Maintenance | ● Active (Last commit: Nov 11, 2026) · 419 open issues |
| Replaces SaaS | Open Source Slack Alternative ($8.75–$15/user/month) → |
| Target Audience | Developers and engineering teams building with Go, seeking reliable, tested, and actively maintained tooling for production workloads. |
🛡️ Repository Maintenance & Health Audit (2026)
Health Score: 95/100 · Grade A+Yes, alertmanager is actively maintained. Continuous telemetry recorded the last code commit on Nov 11, 2026 (2 days ago). Supported by 8,697 stars and 2,505 community forks, this repository holds a calculated health index of 95/100, reflecting very active (commits within last 14 days) and active community feedback (419 open).
Star History
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[](https://githubrepo.cloud/repo/prometheus/alertmanager?utm_source=readme_chart)Compact badges for your README header. Real-time stars, velocity, health audit, and rank.
[](https://githubrepo.cloud/repo/prometheus/alertmanager?utm_source=readme_badge) [](https://githubrepo.cloud/repo/prometheus/alertmanager?utm_source=readme_badge) [](https://githubrepo.cloud/repo/prometheus/alertmanager?utm_source=readme_badge) [](https://githubrepo.cloud/repo/prometheus/alertmanager?utm_source=readme_badge) [](https://githubrepo.cloud/repo/prometheus/alertmanager?utm_source=readme_badge)Momentum
+61
STARS · LAST 30 DAYS
2
PER DAY
#269
MOST-STARRED Go
| Window | 7 days | 30 days | 90 days |
|---|---|---|---|
| Stars gained | +61 | +61 | +180 |
| Per day | 9 | 2 | 2 |
| Forks gained | +25 | +25 | +125 |
alertmanager gained 61 stars in the last 30 days, about 2 a day, and now has 8.7K. It is about 13 years old and has averaged roughly 669 stars a year. It ranks #269 among Go repositories and #1,910 across all languages on GitHubRepo.
Trending Record
35
DAYS ON TRENDING
#2064
BEST RANK
Oct 6, 2026
FIRST APPEARANCE
Active
STATUS TODAY
alertmanager has maintained a continuous presence across global trending indexes, peaking at #2064. Below is the 30-day activity profile:
💡 Overview
alertmanager is an open-source project written in Go: Prometheus Alertmanager.
Engineered for speed, consistency, and developer ease, it solves common hurdles in alertmanager, deduplication, email. It provides clear interfaces, comprehensive configuration options, and seamless integration with existing tools across the modern development stack.
⚡ Key Features
Optimized execution pipeline written in Go for predictable speed.
Zero-friction configuration with comprehensive sensible defaults out of the box.
Cross-platform runtime support across Linux, macOS, and Windows environments.
Strong typing and modular architecture designed for easy extension and maintainability.
Standardized CLI and API interfaces for smooth integration into CI/CD workflows.
Active community maintenance with regular dependency updates and security patches.
📥 Installation
$ go install github.com/prometheus/alertmanager@latest⚙ System Requirements
Platforms
- • macOS
- • Linux
- • Windows
Runtime & Dependencies
Go >= 1.21 runtime environment
Architecture
x86_64, ARM64 (Apple Silicon & Graviton)
🧠 How It Works
alertmanager coordinates its core functionality through a modular Go pipeline. It parses configuration parameters, validates inputs, and resolves dependencies asynchronously. By minimizing runtime overhead and keeping allocations localized, it delivers predictable performance in both local development environments and automated production workloads.
🎯 Production Use Cases
Autonomous AI Agents
Orchestrate intelligent workflows and tool-calling routines with alertmanager.
Model Inference & Prompting
Integrate fast, local or cloud-hosted generative AI models directly into production code.
Context Memory & RAG
Augment language models with dynamic vector retrieval and structured project memory.
Developer Productivity
Automate repetitive engineering tasks, code generation, and test creation using AI agents.
🚀 Getting Started
Install alertmanager using your package manager: `go install github.com/prometheus/alertmanager@latest`
Initialize your project workspace or configuration file for alertmanager.
Import alertmanager into your codebase or invoke it directly from your terminal.
Execute your test suite or run `alertmanager --help` to verify successful setup.
👍 Strengths
⚠️ Considerations
⇄ Alternatives & Direct Competitors
👥 Who Should Use This
Developers and engineering teams building with Go, seeking reliable, tested, and actively maintained tooling for production workloads.
🏆 Nearby in the Rankings
prometheus/alertmanager is currently ranked #1,910 by stars across every repository tracked on GitHubRepo. These are adjacent projects:
| Rank | Repository | Language | Stars | Action |
|---|---|---|---|---|
| #1,905 | apache/beam | Java | ★ 8.7K | Compare ↗ |
| #1,905 | ellite/Wallos | PHP | ★ 8.7K | Compare ↗ |
| #1,907 | aimeos/aimeos-laravel | PHP | ★ 8.7K | Compare ↗ |
| #1,908 | florisboard/florisboard | Kotlin | ★ 8.7K | Compare ↗ |
| #1,909 | l0ng-ai/openidea | TypeScript | ★ 8.7K | Compare ↗ |
| #1,910 | prometheus/alertmanager This Project | Go | ★ 8.7K | |
| #1,910 | tuupola/lazyload | JavaScript | ★ 8.7K | Compare ↗ |
| #1,910 | rsuite/rsuite | TypeScript | ★ 8.7K | Compare ↗ |
| #1,913 | kean/Nuke | Swift | ★ 8.7K | Compare ↗ |
| #1,914 | openshift/origin | Go | ★ 8.7K | Compare ↗ |
| #1,914 | microsoft/TypeChat | JavaScript | ★ 8.7K | Compare ↗ |
Frequently Asked Questions
What does alertmanager do? +
Prometheus Alertmanager
Is alertmanager actively maintained in 2026? +
Yes, alertmanager is actively maintained. The latest code push was recorded on Nov 11, 2026 (2 days ago). It holds a calculated Maintenance Health Score of 95/100 (A+ rating) with 8,697 stars and 419 open issues.
What language is alertmanager written in? +
The primary language is Go. Topics include: alertmanager, deduplication, email, hacktoberfest, monitoring.
How many stars does alertmanager have? +
alertmanager has 8,697 stars and 2,505 forks on GitHub.
How does alertmanager rank among GitHub repositories? +
With 8,697 stars, prometheus/alertmanager is ranked #1,910 globally across all repositories tracked on GitHubRepo and #269 among Go projects.
What license is alertmanager distributed under? +
The repository reports a Apache-2.0 license. Always verify the repository LICENSE file for legal terms.
