# Prometheus: Free Open Source Alternative to Chronosphere, SolarWinds, Splunk

Canonical: https://caniforkit.com/fork/prometheus
Last updated: 2026-11-07

Prometheus (Open Source, Open Source) replaces Chronosphere, SolarWinds, Splunk. Pull-based monitoring system with a multi-dimensional data model, PromQL query language, built-in alerting, and a time series database built for cloud native environments.

## Tool Specifications
- **Tool Name**: Prometheus
- **Type**: Open Source Project
- **License**: Open Source
- **Official Website**: https://prometheus.io/
- **GitHub Repository**: https://github.com/prometheus/prometheus
- **GitHub Stars**: ★ 67.3k
- **Runs On**: Self-host
- **Maintenance Status**: nov 2026
- **Platforms**: web, self-hosted, docker to self-host
- **Data Storage**: All application data and configuration live on your own server or local database.
- **Installation**: Clone https://github.com/prometheus/prometheus or deploy with Docker Compose
- **Setup Requirements**: Deploy via Docker or binary release from GitHub and configure environment variables.
- **The Catch / Limitation**: Requires self-hosting setup, updates, and server maintenance compared to managed Chronosphere.

## Paid SaaS Applications Replaced (3)
Replacing these paid tools with Prometheus saves up to $105/mo ($1,260/yr) in software subscriptions:

| Replaced Software | Category | SaaS Price | Comparison Guide |
| --- | --- | --- | --- |
| [Chronosphere](https://caniforkit.com/chronosphere) | [monitoring](https://caniforkit.com/category/monitoring) | $35/mo | [Compare Chronosphere vs Prometheus](https://caniforkit.com/vs/chronosphere-vs-prometheus) |
| [SolarWinds](https://caniforkit.com/solarwinds) | [monitoring](https://caniforkit.com/category/monitoring) | $35/mo | [Compare SolarWinds vs Prometheus](https://caniforkit.com/vs/solarwinds-vs-prometheus) |
| [Splunk](https://caniforkit.com/splunk) | [monitoring](https://caniforkit.com/category/monitoring) | $35/mo | [Compare Splunk vs Prometheus](https://caniforkit.com/vs/splunk-vs-prometheus) |

## Frequently Asked Questions

### Is Prometheus free and open source?
Prometheus is an open source tool licensed under Open Source that runs on self-host. Pull-based monitoring system with a multi-dimensional data model, PromQL query language, built-in alerting, and a time series database built for cloud native environments.

### What is the trade-off or limitation of using Prometheus?
Requires self-hosting setup, updates, and server maintenance compared to managed Chronosphere.

## Related

- [Self-Hosted Open Source Directory](https://caniforkit.com/self-hosted)
- [All Paid SaaS Alternatives Index](https://caniforkit.com/alternatives)
- [Software Categories Directory](https://caniforkit.com/categories)
- [Homepage](https://caniforkit.com)