head to head · open source
Uptime Kuma vs Exceptionless
Uptime Kuma has 93,190 GitHub stars, 8,655 forks, 805 open issues and last shipped yesterday. Exceptionless has 2,456 stars, 507 forks, 66 open issues and last shipped 4 days ago. Uptime Kuma leads on adoption by 3,694% (93,190 vs 2,456 stars). Uptime Kuma is written in JavaScript under MIT; Exceptionless is written in C# under Apache-2.0. Uptime Kuma has attracted 9% as many forks as stars, Exceptionless 21%. 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 | Exceptionless | |
|---|---|---|
| GitHub stars | ★ 93K | ★ 2.5K |
| License | MIT | Apache-2.0 |
| Written in | JavaScript | C# |
| Last push | 2026-11-02 | 2026-10-30 |
| Forks | ⑂ 8.7K | ⑂ 507 |
| 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 Exceptionless if
- You want the Exceptionless feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches C#
- You evaluated both and Exceptionless 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 Exceptionless
The definition of the word exceptionless is: to be without exception. Exceptionless provides real time error reporting for your JavaScript, Node, .NET Core, ASP.NET, Web API, WebForms, WPF, Console, and MVC apps. It organizes the gathered information into simple actionable data that will help your app become exceptionless! ⭐️ We appreciate your star, it helps! Using Exceptionless Refer to the Exceptionless documentation. Hosting Options We provide very reasonably priced hosting at Exceptionless. By using our hosted service, you are supporting the project and helping it get better! We also provide set up and…
read the full Exceptionless overview →
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Frequently asked questions
Is Uptime Kuma or Exceptionless more popular?
Uptime Kuma has 93,190 GitHub stars and Exceptionless has 2,456. Uptime Kuma has the larger community by that measure.
Are Uptime Kuma and Exceptionless free?
Both are open source. Uptime Kuma is licensed under MIT and Exceptionless under Apache-2.0. Neither carries a licence fee.
What is the difference between Uptime Kuma and Exceptionless?
Uptime Kuma is written in JavaScript and Exceptionless in C#. 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 Exceptionless?
Choose Uptime Kuma if you want the larger community (93,190 stars) or its MIT licence terms. Choose Exceptionless if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.