head to head · open source
effect vs Logstash
effect has 17,464 GitHub stars, 892 forks, 253 open issues and last shipped yesterday. Logstash has 14,972 stars, 3,503 forks, 2,254 open issues and last shipped yesterday. effect leads on adoption by 17% (17,464 vs 14,972 stars). effect is written in TypeScript under MIT; Logstash is written in Java under a custom or non-standard licence. effect has attracted 5% as many forks as stars, Logstash 23%. effect 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
| effect | Logstash | |
|---|---|---|
| GitHub stars | ★ 17K | ★ 15K |
| License | MIT | Custom / other |
| Written in | TypeScript | Java |
| Last push | 2026-11-02 | 2026-11-02 |
| Forks | ⑂ 892 | ⑂ 3.5K |
| 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 Logstash if
- You want the Logstash feature set and don't need the biggest community
- You prefer the Custom / other license terms
- Your stack matches Java
- You evaluated both and Logstash 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 Logstash
Logstash Logstash is part of the Elastic Stack along with Beats, Elasticsearch and Kibana. Logstash is a server side data processing pipeline that ingests data from a multitude of sources simultaneously, transforms it, and then sends it to your favorite "stash." (Ours is Elasticsearch, naturally.). Logstash has over 200 plugins, and you can write your own very easily as well. For more info, see Documentation and Getting Started You can find the documentation and getting started guides for Logstash on the elastic.co site For information about building the documentation, see the README in Downloads You can…
read the full Logstash overview →
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Frequently asked questions
Is effect or Logstash more popular?
effect has 17,464 GitHub stars and Logstash has 14,972. effect has the larger community by that measure.
Are effect and Logstash free?
Both are open source. effect is licensed under MIT, and Logstash has no licence declared in this registry. Both are free to self-host.
What is the difference between effect and Logstash?
effect is written in TypeScript and Logstash in Java. 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 Logstash?
Choose effect if you want the larger community (17,464 stars) or its MIT licence terms. Choose Logstash if its feature set, stack or Custom / other licence fits better. Both are self-hostable.