# Best open source monitoring tools > The best open source monitoring tool is Uptime Kuma, with 92,149 GitHub stars, the MIT license and a Docker image; Netdata and Grafana are strong alternatives. This page also breaks the picks down by team size and use: Uptime Kuma leads for startups, small business, enterprise and solo developers. The overall ranking weighs GitHub stars, commits in the last year, Docker images, open-source licenses and recent commits across the 20 apps in the monitoring & status pages category of the appsgit catalog. ## Key facts | Fact | Value | |---|---| | Question | What is the best open source monitoring tool? | | Picks | 25 | | Top pick | Uptime Kuma (92,149 stars) | | Data as of | Oct 7, 2026 | | Canonical URL | https://appsgit.com/best/open-source-monitoring-tools | ## Top picks 10 of the 20 apps in the monitoring & status pages category, ranked on GitHub stars, commits in the last year, Docker images, open-source licenses and recent commits. - [Uptime Kuma](https://appsgit.com/apps/uptime-kuma) (92,149 stars, MIT, JavaScript, Docker): Uptime Kuma has 92,149 GitHub stars, uses the MIT license, ships a Docker image and had 1,359 commits in the last year; it replaces Datadog and Uptime Robot. - [Netdata](https://appsgit.com/apps/netdata) (80,804 stars, GPL-3.0, Go, Docker): Netdata has 80,804 GitHub stars, uses the GPL-3.0 license, ships a Docker image and had 2,609 commits in the last year; it replaces Datadog and Pingdom. - [Grafana](https://appsgit.com/apps/grafana) (77,096 stars, AGPL-3.0, TypeScript, Docker): Grafana has 77,096 GitHub stars, uses the AGPL-3.0 license, ships a Docker image and had 11,362 commits in the last year; it replaces Datadog and Grafana Cloud. - [Prometheus](https://appsgit.com/apps/prometheus) (66,381 stars, Apache-2.0, Go, Docker): Prometheus has 66,381 GitHub stars, uses the Apache-2.0 license, ships a Docker image and had 2,592 commits in the last year; it replaces Datadog and Grafana Cloud. - [Glances](https://appsgit.com/apps/glances) (33,740 stars, LGPL-3.0, Python, Docker): Glances has 33,740 GitHub stars, uses the LGPL-3.0 license, ships a Docker image and had 935 commits in the last year. - [SigNoz](https://appsgit.com/apps/signoz) (32,287 stars, MIT, TypeScript, Docker): SigNoz has 32,287 GitHub stars, uses the MIT license, ships a Docker image and had 1,939 commits in the last year; it replaces Datadog and Grafana Cloud. - [Grafana Loki](https://appsgit.com/apps/grafana-loki) (28,990 stars, AGPL-3.0, Go, Docker): Grafana Loki has 28,990 GitHub stars, uses the AGPL-3.0 license, ships a Docker image and had 3,073 commits in the last year. - [Jaeger](https://appsgit.com/apps/jaeger) (23,268 stars, Apache-2.0, Go, Docker): Jaeger has 23,268 GitHub stars, uses the Apache-2.0 license, ships a Docker image and had 1,050 commits in the last year. - [Beszel](https://appsgit.com/apps/beszel) (25,991 stars, MIT, Go, Docker): Beszel has 25,991 GitHub stars, uses the MIT license, ships a Docker image and had 701 commits in the last year. - [OpenObserve](https://appsgit.com/apps/openobserve) (22,266 stars, AGPL-3.0, TypeScript, Docker): OpenObserve has 22,266 GitHub stars, uses the AGPL-3.0 license, ships a Docker image and had 3,287 commits in the last year. ## Best for startups Ranked for startups on GitHub stars, commits in the last year, Docker images, open-source licenses, project websites and recent commits. - [Uptime Kuma](https://appsgit.com/apps/uptime-kuma) (92,149 stars, MIT, JavaScript, Docker): Uptime Kuma has 92,149 GitHub stars, uses the MIT license, ships a Docker image and had 1,359 commits in the last year; it replaces Datadog and Uptime Robot. For startups it also scores on a Docker image, a permissive license (MIT), a project website and a commit in the last 90 days. - [Prometheus](https://appsgit.com/apps/prometheus) (66,381 stars, Apache-2.0, Go, Docker): Prometheus has 66,381 GitHub stars, uses the Apache-2.0 license, ships a Docker image and had 2,592 commits in the last year; it replaces Datadog and Grafana Cloud. For startups it also scores on a Docker image, a permissive license (Apache-2.0), a project website and a commit in the last 90 days. - [Netdata](https://appsgit.com/apps/netdata) (80,804 stars, GPL-3.0, Go, Docker): Netdata has 80,804 GitHub stars, uses the GPL-3.0 license, ships a Docker image and had 2,609 commits in the last year; it replaces Datadog and Pingdom. For startups it also scores on a Docker image, an open-source license, a project website and a commit in the last 90 days. - [Grafana](https://appsgit.com/apps/grafana) (77,096 stars, AGPL-3.0, TypeScript, Docker): Grafana has 77,096 GitHub stars, uses the AGPL-3.0 license, ships a Docker image and had 11,362 commits in the last year; it replaces Datadog and Grafana Cloud. For startups it also scores on a Docker image, an open-source license, a project website and a commit in the last 90 days. - [SigNoz](https://appsgit.com/apps/signoz) (32,287 stars, MIT, TypeScript, Docker): SigNoz has 32,287 GitHub stars, uses the MIT license, ships a Docker image and had 1,939 commits in the last year; it replaces Datadog and Grafana Cloud. For startups it also scores on a Docker image, a permissive license (MIT), a project website and a commit in the last 90 days. ## Best for small business Ranked for small business on GitHub stars, commits in the last year, Docker images, open-source licenses, project websites, recent commits and deploy guides. - [Uptime Kuma](https://appsgit.com/apps/uptime-kuma) (92,149 stars, MIT, JavaScript, Docker): Uptime Kuma has 92,149 GitHub stars, uses the MIT license, ships a Docker image and had 1,359 commits in the last year; it replaces Datadog and Uptime Robot, and appsgit has a step-by-step deploy guide for it. For small business it also scores on a Docker image, an open-source license, a project website, a commit in the last 90 days and an appsgit deploy guide. - [Grafana](https://appsgit.com/apps/grafana) (77,096 stars, AGPL-3.0, TypeScript, Docker): Grafana has 77,096 GitHub stars, uses the AGPL-3.0 license, ships a Docker image and had 11,362 commits in the last year; it replaces Datadog and Grafana Cloud, and appsgit has a step-by-step deploy guide for it. For small business it also scores on a Docker image, an open-source license, a project website, a commit in the last 90 days and an appsgit deploy guide. - [Prometheus](https://appsgit.com/apps/prometheus) (66,381 stars, Apache-2.0, Go, Docker): Prometheus has 66,381 GitHub stars, uses the Apache-2.0 license, ships a Docker image and had 2,592 commits in the last year; it replaces Datadog and Grafana Cloud, and appsgit has a step-by-step deploy guide for it. For small business it also scores on a Docker image, an open-source license, a project website, a commit in the last 90 days and an appsgit deploy guide. - [Netdata](https://appsgit.com/apps/netdata) (80,804 stars, GPL-3.0, Go, Docker): Netdata has 80,804 GitHub stars, uses the GPL-3.0 license, ships a Docker image and had 2,609 commits in the last year; it replaces Datadog and Pingdom. For small business it also scores on a Docker image, an open-source license, a project website and a commit in the last 90 days. - [Glances](https://appsgit.com/apps/glances) (33,740 stars, LGPL-3.0, Python, Docker): Glances has 33,740 GitHub stars, uses the LGPL-3.0 license, ships a Docker image and had 935 commits in the last year. For small business it also scores on a Docker image, an open-source license, a project website and a commit in the last 90 days. ## Best for enterprise and solo developers Ranked for enterprise and solo developers (the same order for each) on GitHub stars, commits in the last year, Docker images, open-source licenses and recent commits. - [Uptime Kuma](https://appsgit.com/apps/uptime-kuma) (92,149 stars, MIT, JavaScript, Docker): Uptime Kuma has 92,149 GitHub stars, uses the MIT license, ships a Docker image and had 1,359 commits in the last year; it replaces Datadog and Uptime Robot. For enterprise it also scores on an open-source license and a commit in the last 90 days. - [Netdata](https://appsgit.com/apps/netdata) (80,804 stars, GPL-3.0, Go, Docker): Netdata has 80,804 GitHub stars, uses the GPL-3.0 license, ships a Docker image and had 2,609 commits in the last year; it replaces Datadog and Pingdom. For enterprise it also scores on an open-source license and a commit in the last 90 days. - [Grafana](https://appsgit.com/apps/grafana) (77,096 stars, AGPL-3.0, TypeScript, Docker): Grafana has 77,096 GitHub stars, uses the AGPL-3.0 license, ships a Docker image and had 11,362 commits in the last year; it replaces Datadog and Grafana Cloud. For enterprise it also scores on an open-source license and a commit in the last 90 days. - [Prometheus](https://appsgit.com/apps/prometheus) (66,381 stars, Apache-2.0, Go, Docker): Prometheus has 66,381 GitHub stars, uses the Apache-2.0 license, ships a Docker image and had 2,592 commits in the last year; it replaces Datadog and Grafana Cloud. For enterprise it also scores on an open-source license and a commit in the last 90 days. - [Glances](https://appsgit.com/apps/glances) (33,740 stars, LGPL-3.0, Python, Docker): Glances has 33,740 GitHub stars, uses the LGPL-3.0 license, ships a Docker image and had 935 commits in the last year. For enterprise it also scores on an open-source license and a commit in the last 90 days. ## How this list was made - Candidates: the 20 apps in the monitoring & status pages category. Archived projects and projects with no commit in the last two years are left out. - Base score: GitHub stars on a log scale plus commits in the last 12 months (log scale, capped at 1,000). - Bonus points for a published Docker image, an OSI-approved open-source license and a commit in the last 90 days. - Each "Best for" section re-ranks the same apps with that audience's profile (for example startups add points for permissive licenses, project websites and recent commits; small business for Docker images and deploy guides). - Source-available apps can rank, but they are labelled and never described as open source. ## FAQ ### Is Uptime Kuma free? Yes. Uptime Kuma is open-source software released under the MIT license, so you can self-host it at no cost. You only pay for the server it runs on, and some projects also offer an optional paid cloud plan. ### Which open source monitoring tool is best for a startup? Uptime Kuma ranks first for startups, with 92,149 GitHub stars, the MIT license and a Docker image; Prometheus and Netdata follow. The startups ranking adds points for Docker images, permissive licenses, project websites and recent commits on top of stars and activity. ### Which open source monitoring tool is best for a small business? Uptime Kuma ranks first for small business, with 92,149 GitHub stars, the MIT license and a Docker image; Grafana and Prometheus follow. The small business ranking adds points for Docker images, open-source licenses, project websites, recent commits and deploy guides on top of stars and activity. ### Can I self-host these monitoring tools with Docker? Yes, all of them. Uptime Kuma, Netdata and Grafana publish Docker images, so you can run them on a VPS or home server with Docker Compose. ### Are all of these monitoring tools open source? All 10 apps on this list are open source. You can self-host and modify each one under its license. ## Related questions - [What is the best open source self-hosted dashboard?](https://appsgit.com/best/open-source-dashboards) - [What is the best open source database tool?](https://appsgit.com/best/open-source-database-tools) - [What is the best open source budgeting app?](https://appsgit.com/best/open-source-budgeting-software) - [What is the best open source CMS?](https://appsgit.com/best/open-source-cms) - [What is the best open source team chat app?](https://appsgit.com/best/open-source-team-chat) - [What is the best open source file sharing app?](https://appsgit.com/best/open-source-file-sharing) - [What is the best open source password manager?](https://appsgit.com/best/open-source-password-managers) - [What is the best open source note-taking app?](https://appsgit.com/best/open-source-note-taking-apps) ## See also - [All monitoring & status pages apps](https://appsgit.com/categories/monitoring) - [All personal dashboards apps](https://appsgit.com/categories/dashboards) - [All database management apps](https://appsgit.com/categories/database-management) - [Open-source alternatives to Datadog](https://appsgit.com/alternatives/datadog) - [Open-source alternatives to Uptime Robot](https://appsgit.com/alternatives/uptimerobot) - [Open-source alternatives to Statuspage](https://appsgit.com/alternatives/statuspage) - [Open-source alternatives to Pingdom](https://appsgit.com/alternatives/pingdom) - [Open-source alternatives to Grafana Cloud](https://appsgit.com/alternatives/grafana-cloud) - [Uptime Kuma vs Gatus](https://appsgit.com/compare/uptime-kuma-vs-gatus) - [Grafana vs Metabase](https://appsgit.com/compare/grafana-vs-metabase) - [How to self-host Uptime Kuma with Docker Compose](https://appsgit.com/guides/uptime-kuma) - [How to self-host Grafana with Docker Compose](https://appsgit.com/guides/grafana) - [How to self-host Prometheus with Docker Compose](https://appsgit.com/guides/prometheus) --- Canonical page: https://appsgit.com/best/open-source-monitoring-tools Source: appsgit (https://appsgit.com), the app store for github. Data from the GitHub API, refreshed nightly. Machine access: JSON API https://appsgit.com/api/v1/apps (OpenAPI: https://appsgit.com/openapi.json), MCP server https://mcp.appsgit.com/mcp, full index https://appsgit.com/llms-full.txt.