head to head · open source
Countly vs tianji
Countly has 5,924 GitHub stars, 986 forks, 15 open issues and last shipped yesterday. tianji has 3,118 stars, 199 forks, 139 open issues and last shipped 6 days ago. Countly leads on adoption by 90% (5,924 vs 3,118 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%. Countly 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 | 2026-11-04 | 2026-10-30 |
| Forks | ⑂ 986 | ⑂ 199 |
| 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
🔗 Quick links Countly Website Countly Server installation guide Countly SDKs, download and documentation links Countly Community on Discord User Guides for Countly features 🌟 What is Countly? Countly is a privacy first, AI ready analytics and customer engagement platform built for organizations that require full data ownership and deployment flexibility . Unlike traditional SaaS only analytics tools, Countly can be deployed on premises or in a private cloud , giving you complete control over your data, infrastructure, compliance, and security. Teams use Countly to: Understand user behavior across mobile, web…
read the full Countly overview →
About tianji
Tianji All in One Insight Hub Website analytics + Uptime Monitor + Server Status = Tianji All in one project! Motivation During our observations of the website. We often need to use multiple applications together. For example, we need analysis tools such as GA / umami to check pv/uv and the number of visits to each page, we need an uptime monitor to check the network quality and connectivity of the server, and we need to use prometheus to obtain the status reported by the server to check the quality of the server. In addition, if we develop an application that allows open source deployment, we often need a…
read the full tianji overview →
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Frequently asked questions
Is Countly or tianji more popular?
Countly has 5,924 GitHub stars and tianji has 3,118. 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 (5,924 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.