head to head · open source
Countly vs tianji
Countly has 5,905 GitHub stars, 981 forks, 15 open issues and last shipped 2 days ago. tianji has 3,100 stars, 194 forks, 139 open issues and last shipped yesterday. Countly leads on adoption by 90% (5,905 vs 3,100 stars). Countly is written in JavaScript under a custom or non-standard licence; tianji is written in TypeScript under Apache-2.0. Countly has attracted 17% as many forks as stars, tianji 6%. tianji was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (analytics), so they are genuine substitutes rather than adjacent tools.
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
| Countly | tianji | |
|---|---|---|
| GitHub stars | ★ 5.9K | ★ 3.1K |
| License | Custom / other | Apache-2.0 |
| Written in | JavaScript | TypeScript |
| Last push | 2026-09-18 | 2026-09-19 |
| Forks | ⑂ 981 | ⑂ 194 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Countly if
- You weight community size — 5.9K stars and counting
- You want the Custom / other license terms
- Your stack matches JavaScript
- You value the larger contributor base for long-term maintenance
pick tianji if
- You want the tianji feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches TypeScript
- You evaluated both and tianji fits your workflow better
About Countly
Countly is a privacy first, AI ready analytics and customer engagement platform that organizations deploy themselves rather than consume only as a hosted service. The server side component lives in this repository and is written in JavaScript, sitting in the JavaScript and Node.js ecosystem alongside the client SDKs that ship separately for iOS, Android, React Native, Flutter, NodeJS, Unity, Java and JavaScript. The platform is built around the idea that customer data should stay under the operator's control: Countly runs on premises or in a private cloud, and the project describes full data ownership, deployment…
read the full Countly overview →
About tianji
Tianji is a self hosted TypeScript project that combines website analytics, uptime monitoring, and server status in one application under the Apache 2.0 license. It is positioned as an all in one insight hub rather than only another Google Analytics alternative, and it lives in the web and product analytics ecosystem alongside tools such as Umami, Google Analytics, uptime monitors, and server status collectors.
read the full tianji overview →
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Frequently asked questions
Is Countly or tianji more popular?
Countly has 5,905 GitHub stars and tianji has 3,100. Countly has the larger community by that measure.
Are Countly and tianji free?
Both are open source. Countly has no licence declared in this registry, and tianji is licensed under Apache-2.0. Both are free to self-host.
What is the difference between Countly and tianji?
Countly is written in JavaScript and tianji in TypeScript. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, Countly or tianji?
Choose Countly if you want the larger community (5,905 stars) or its Custom / other licence terms. Choose tianji if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.