head to head · open source
Uptime Kuma vs aya
Uptime Kuma has 93,190 GitHub stars, 8,655 forks, 805 open issues and last shipped yesterday. aya has 4,886 stars, 484 forks, 201 open issues and last shipped yesterday. Uptime Kuma leads on adoption by 1,807% (93,190 vs 4,886 stars). Uptime Kuma is written in JavaScript under MIT; aya is written in Rust under Apache-2.0. Uptime Kuma has attracted 9% as many forks as stars, aya 10%. aya 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 | aya | |
|---|---|---|
| GitHub stars | ★ 93K | ★ 4.9K |
| License | MIT | Apache-2.0 |
| Written in | JavaScript | Rust |
| Last push | 2026-11-02 | 2026-11-02 |
| Forks | ⑂ 8.7K | ⑂ 484 |
| 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 aya if
- You want the aya feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Rust
- You evaluated both and aya 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 aya
[![Crates.io][crates badge]][crates url] ![License][license badge] [![Build status][build badge]][build url] [![Book][book badge]][book url] [![Gurubase][gurubase badge]][gurubase url] [crates badge]: [crates url]: [license badge]: [build badge]: [build url]: [book badge]: [book url]: [gurubase badge]: [gurubase url]: API Documentation [![Unreleased Documentation][git docs badge]][git api docs] [![Documentation][api docs badge]][api docs] [git docs badge]: [git api docs]: [api docs badge]: [api docs]: Community [![Discord][discord badge]][chat url] [![Awesome][awesome badge]][awesome aya] Join [the conversation…
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Frequently asked questions
Is Uptime Kuma or aya more popular?
Uptime Kuma has 93,190 GitHub stars and aya has 4,886. Uptime Kuma has the larger community by that measure.
Are Uptime Kuma and aya free?
Both are open source. Uptime Kuma is licensed under MIT and aya under Apache-2.0. Neither carries a licence fee.
What is the difference between Uptime Kuma and aya?
Uptime Kuma is written in JavaScript and aya in Rust. 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 aya?
Choose Uptime Kuma if you want the larger community (93,190 stars) or its MIT licence terms. Choose aya if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.