head to head · open source
huginn vs opencost
huginn has 50,269 GitHub stars, 4,339 forks, 698 open issues and last shipped yesterday. opencost has 6,802 stars, 916 forks, 306 open issues and last shipped 5 days ago. huginn leads on adoption by 639% (50,269 vs 6,802 stars). huginn is written in Ruby under MIT; opencost is written in Go under Apache-2.0. huginn has attracted 9% as many forks as stars, opencost 13%. 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 | opencost | |
|---|---|---|
| GitHub stars | ★ 50K | ★ 6.8K |
| License | MIT | Apache-2.0 |
| Written in | Ruby | Go |
| Last push | 2026-11-02 | 2026-10-29 |
| Forks | ⑂ 4.3K | ⑂ 916 |
| 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 opencost if
- You want the opencost 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 opencost 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 opencost
OpenCost — your favorite open source cost monitoring tool for Kubernetes and cloud spend OpenCost give teams visibility into current and historical Kubernetes and cloud spend and resource allocation. These models provide cost transparency in Kubernetes environments that support multiple applications, teams, departments, etc. It also provides visibility into the cloud costs across multiple providers. OpenCost was originally developed and open sourced by Kubecost. This project combines a specification as well as a Golang implementation of these detailed requirements. The web UI is available in the…
read the full opencost overview →
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Frequently asked questions
Is huginn or opencost more popular?
huginn has 50,269 GitHub stars and opencost has 6,802. huginn has the larger community by that measure.
Are huginn and opencost free?
Both are open source. huginn is licensed under MIT and opencost under Apache-2.0. Neither carries a licence fee.
What is the difference between huginn and opencost?
huginn is written in Ruby and opencost 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, huginn or opencost?
Choose huginn if you want the larger community (50,269 stars) or its MIT licence terms. Choose opencost if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.