head to head · open source
huginn vs client_java
huginn has 50,269 GitHub stars, 4,339 forks, 698 open issues and last shipped yesterday. client_java has 2,291 stars, 837 forks, 23 open issues and last shipped yesterday. huginn leads on adoption by 2,094% (50,269 vs 2,291 stars). huginn is written in Ruby under MIT; client_java is written in Java under Apache-2.0. huginn has attracted 9% as many forks as stars, client_java 37%. client_java 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
| huginn | client_java | |
|---|---|---|
| GitHub stars | ★ 50K | ★ 2.3K |
| License | MIT | Apache-2.0 |
| Written in | Ruby | Java |
| Last push | 2026-11-02 | 2026-11-02 |
| Forks | ⑂ 4.3K | ⑂ 837 |
| 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_java if
- You want the client_java feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Java
- You evaluated both and client_java 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_java
Prometheus Java Metrics Library [![Build][build badge]][build workflow] [build badge]: [build workflow]: Documentation Contributing and community See CONTRIBUTING.md and the community section of the Prometheus homepage. The Prometheus Java community is present on the CNCF Slack on prometheus java , and we have a fortnightly community call in the Prometheus public calendar. Previous Releases The source code for 0.16.0 and older is on the simpleclient branch. License Apache License 2.0, see LICENSE.
read the full client_java overview →
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Frequently asked questions
Is huginn or client_java more popular?
huginn has 50,269 GitHub stars and client_java has 2,291. huginn has the larger community by that measure.
Are huginn and client_java free?
Both are open source. huginn is licensed under MIT and client_java under Apache-2.0. Neither carries a licence fee.
What is the difference between huginn and client_java?
huginn is written in Ruby and client_java 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, huginn or client_java?
Choose huginn if you want the larger community (50,269 stars) or its MIT licence terms. Choose client_java if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.