head to head · open source
Uptime Kuma vs m3
Uptime Kuma has 93,190 GitHub stars, 8,655 forks, 805 open issues and last shipped yesterday. m3 has 4,909 stars, 460 forks, 222 open issues and last shipped 14 days ago. Uptime Kuma leads on adoption by 1,798% (93,190 vs 4,909 stars). Uptime Kuma is written in JavaScript under MIT; m3 is written in Go under Apache-2.0. Uptime Kuma has attracted 9% as many forks as stars, m3 9%. Uptime Kuma was the more recently maintained of the two, and both are self-hostable with no licence fee.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| Uptime Kuma | m3 | |
|---|---|---|
| GitHub stars | ★ 93K | ★ 4.9K |
| License | MIT | Apache-2.0 |
| Written in | JavaScript | Go |
| Last push | 2026-11-02 | 2026-10-20 |
| Forks | ⑂ 8.7K | ⑂ 460 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Uptime Kuma if
- You weight community size — 93K stars and counting
- You want the MIT license terms
- Your stack matches JavaScript
- You value the larger contributor base for long-term maintenance
pick m3 if
- You want the m3 feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Go
- You evaluated both and m3 fits your workflow better
About Uptime Kuma
Uptime Kuma Uptime Kuma is an easy to use self hosted monitoring tool. 🥔 Live Demo Try it! Demo Server (Location: Frankfurt Germany): It is a temporary live demo, all data will be deleted after 10 minutes. Sponsored by Uptime Kuma Sponsors. ⭐ Features Monitoring uptime for HTTP(s) / TCP / HTTP(s) Keyword / HTTP(s) Json Query / Websocket / Ping / DNS Record / Push / Steam Game Server / Docker Containers Fancy, Reactive, Fast UI/UX Notifications via Telegram, Discord, Gotify, Slack, Pushover, Email (SMTP), and 90+ notification services, click here for the full list 20 second intervals Multi Languages Multiple…
read the full Uptime Kuma overview →
About m3
M3 [![GoDoc][doc img]][doc] [![Build Status][ci img]][ci] [![FOSSA Status][fossa img]][fossa] Distributed TSDB and Query Engine, Prometheus Sidecar, Metrics Aggregator, and more such as Graphite storage and query engine. Table of Contents More Information Install Dependencies Usage Contributing More Information Documentation Contributing Slack Forum (Google Group) Community Meetings You can find recordings of past meetups here: . Install Dependencies The simplest and quickest way to try M3 is to use Docker, read the M3 quickstart section for other options. This example uses jq to format the output of API calls…
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Frequently asked questions
Is Uptime Kuma or m3 more popular?
Uptime Kuma has 93,190 GitHub stars and m3 has 4,909. Uptime Kuma has the larger community by that measure.
Are Uptime Kuma and m3 free?
Both are open source. Uptime Kuma is licensed under MIT and m3 under Apache-2.0. Neither carries a licence fee.
What is the difference between Uptime Kuma and m3?
Uptime Kuma is written in JavaScript and m3 in Go. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, Uptime Kuma or m3?
Choose Uptime Kuma if you want the larger community (93,190 stars) or its MIT licence terms. Choose m3 if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.