head to head · open source
Uptime Kuma vs telemetry
Uptime Kuma has 91,498 GitHub stars, 8,431 forks, 805 open issues and last shipped yesterday. telemetry has 921 stars, 74 forks, 6 open issues and last shipped 28 days ago. Uptime Kuma leads on adoption by 9,835% (91,498 vs 921 stars). Uptime Kuma is written in JavaScript under MIT; telemetry is written in Erlang under Apache-2.0. Uptime Kuma has attracted 9% as many forks as stars, telemetry 8%. 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.
← all 13541 open source comparisons
Side by side
| Uptime Kuma | telemetry | |
|---|---|---|
| GitHub stars | ★ 91K | ★ 921 |
| License | MIT | Apache-2.0 |
| Written in | JavaScript | Erlang |
| Last push | 2026-09-18 | 2026-08-22 |
| Forks | ⑂ 8.4K | ⑂ 74 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Uptime Kuma if
- You weight community size — 91K stars and counting
- You want the MIT license terms
- Your stack matches JavaScript
- You value the larger contributor base for long-term maintenance
pick telemetry if
- You want the telemetry feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Erlang
- You evaluated both and telemetry fits your workflow better
About Uptime Kuma
Uptime Kuma is a free, MIT licensed, self hosted monitoring tool with a reactive web dashboard, built for operators and teams that want to watch their own HTTP, TCP, and DNS endpoints and keep the resulting data on their own infrastructure.
read the full Uptime Kuma overview →
About telemetry
Telemetry is a lightweight Erlang and Elixir library for dynamic dispatching of events, aimed at library authors who need to emit instrumentation and at application developers who want to hook custom handlers onto those events.
read the full telemetry overview →
More in Infrastructure & Operations
Related comparisons
More Monitoring & Observability projects
Compare either of these against the rest of the Monitoring & Observability field.
Frequently asked questions
Is Uptime Kuma or telemetry more popular?
Uptime Kuma has 91,498 GitHub stars and telemetry has 921. Uptime Kuma has the larger community by that measure.
Are Uptime Kuma and telemetry free?
Both are open source. Uptime Kuma is licensed under MIT and telemetry under Apache-2.0. Neither carries a licence fee.
What is the difference between Uptime Kuma and telemetry?
Uptime Kuma is written in JavaScript and telemetry in Erlang. 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 telemetry?
Choose Uptime Kuma if you want the larger community (91,498 stars) or its MIT licence terms. Choose telemetry if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.