head to head · open source
effect vs kiali
effect has 17,481 GitHub stars, 895 forks, 253 open issues and last shipped today. kiali has 3,648 stars, 575 forks, 79 open issues and last shipped yesterday. effect leads on adoption by 379% (17,481 vs 3,648 stars). effect is written in TypeScript under MIT; kiali is written in Go under Apache-2.0. effect has attracted 5% as many forks as stars, kiali 16%. effect was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (observability), 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
| effect | kiali | |
|---|---|---|
| GitHub stars | ★ 17K | ★ 3.6K |
| License | MIT | Apache-2.0 |
| Written in | TypeScript | Go |
| Last push | 2026-11-05 | 2026-11-04 |
| Forks | ⑂ 895 | ⑂ 575 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick effect if
- You weight community size — 17K stars and counting
- You want the MIT license terms
- Your stack matches TypeScript
- You value the larger contributor base for long-term maintenance
pick kiali if
- You want the kiali feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Go
- You evaluated both and kiali fits your workflow better
About effect
Effect Effect is a library for building robust, maintainable, type safe, and production grade applications in TypeScript. It helps you handle the hard problems at scale: typed errors, dependency injection, structured concurrency, scheduling, tracing, and unified schema validation. Effect V4 is currently a release candidate. The main branch contains v4 development. Install V4 RC Requirements TypeScript 5.9 or newer. TypeScript 7 is recommended for the best performance and compatibility with Effect's TypeScript tooling. Node.js 18 or newer is the general minimum for running Effect on Node.js. Some integration…
read the full effect overview →
About kiali
= Kiali image: about Kiali", link=" :toc: macro :toc title: image: 2.0 license", link="LICENSE"] == Introduction link: is a management console for Istio service mesh. Kiali can be quickly installed as an Istio add on or integrated as a trusted component within a production environment. === Table of contents toc::[] === Contributing First, check the link: section on kiali.io], which provides a brief introduction on contributing, how to report issues and request features, and how to reach us. For those interested in making code contributions, please also check the link:./CONTRIBUTING.md[Contribution Guide]. ===…
read the full kiali overview →
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Frequently asked questions
Is effect or kiali more popular?
effect has 17,481 GitHub stars and kiali has 3,648. effect has the larger community by that measure.
Are effect and kiali free?
Both are open source. effect is licensed under MIT and kiali under Apache-2.0. Neither carries a licence fee.
What is the difference between effect and kiali?
effect is written in TypeScript and kiali in Go. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, effect or kiali?
Choose effect if you want the larger community (17,481 stars) or its MIT licence terms. Choose kiali if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.