head to head · open source
huginn vs client_js
huginn has 50,269 GitHub stars, 4,339 forks, 698 open issues and last shipped yesterday. client_js has 3,498 stars, 431 forks, 50 open issues and last shipped 2 days ago. huginn leads on adoption by 1,337% (50,269 vs 3,498 stars). huginn is written in Ruby under MIT; client_js is written in JavaScript under Apache-2.0. huginn has attracted 9% as many forks as stars, client_js 12%. huginn was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (monitoring), 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
| huginn | client_js | |
|---|---|---|
| GitHub stars | ★ 50K | ★ 3.5K |
| License | MIT | Apache-2.0 |
| Written in | Ruby | JavaScript |
| Last push | 2026-11-02 | 2026-11-01 |
| Forks | ⑂ 4.3K | ⑂ 431 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick huginn if
- You weight community size — 50K stars and counting
- You want the MIT license terms
- Your stack matches Ruby
- You value the larger contributor base for long-term maintenance
pick client_js if
- You want the client_js feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches JavaScript
- You evaluated both and client_js fits your workflow better
About huginn
What is Huginn? Huginn is a system for building agents that perform automated tasks for you online. They can read the web, watch for events, and take actions on your behalf. Huginn's Agents create and consume events, propagating them along a directed graph. Think of it as a hackable version of IFTTT or Zapier on your own server. You always know who has your data. You do. Here are some of the things that you can do with Huginn: Track the weather and get an email when it's going to rain (or snow) tomorrow ("Don't forget your umbrella!") List terms that you care about and receive email when their occurrence on…
read the full huginn overview →
About client_js
Prometheus client for Node.js A prometheus client for Node.js that supports histogram, summaries, gauges and counters. Installation This package was previously published as prom client . See the CHANGELOG for the breaking changes involved in upgrading. API See example folder for a sample usage. The library does not bundle any web framework. To expose the metrics, respond to Prometheus's scrape requests with the result of await registry.metrics() . Default metrics There are some default metrics recommended by Prometheus itself. To collect these, call collectDefaultMetrics . In addition, some Node.js specific…
read the full client_js overview →
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Frequently asked questions
Is huginn or client_js more popular?
huginn has 50,269 GitHub stars and client_js has 3,498. huginn has the larger community by that measure.
Are huginn and client_js free?
Both are open source. huginn is licensed under MIT and client_js under Apache-2.0. Neither carries a licence fee.
What is the difference between huginn and client_js?
huginn is written in Ruby and client_js in JavaScript. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, huginn or client_js?
Choose huginn if you want the larger community (50,269 stars) or its MIT licence terms. Choose client_js if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.