head to head · open source
huginn vs frostmourne
huginn has 49,969 GitHub stars, 4,299 forks, 698 open issues and last shipped yesterday. frostmourne has 1,494 stars, 317 forks, 31 open issues and last shipped 5 months ago. huginn leads on adoption by 3,245% (49,969 vs 1,494 stars). huginn is written in Ruby under MIT; frostmourne is written in Java under MIT. huginn has attracted 9% as many forks as stars, frostmourne 21%. huginn 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.
← all 13541 open source comparisons
Side by side
| huginn | frostmourne | |
|---|---|---|
| GitHub stars | ★ 50K | ★ 1.5K |
| License | MIT | MIT |
| Written in | Ruby | Java |
| Last push | 2026-09-18 | 2026-04-17 |
| Forks | ⑂ 4.3K | ⑂ 317 |
| 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 frostmourne if
- You want the frostmourne feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches Java
- You evaluated both and frostmourne fits your workflow better
About huginn
Huginn is an open source system for building agents that perform automated tasks online, written in Ruby and released under the MIT license. Its agents read the web, watch for events, and take actions on the user's behalf. Internally, agents create and consume events that propagate along a directed graph, which means one agent's output becomes another agent's input and a chain of small steps can be composed into a larger workflow. The project lives in the Ruby ecosystem and is distributed as an official Docker image or installed locally from a forked repository.
read the full huginn overview →
About frostmourne
Frostmourne（霜之哀伤监控平台）is an MIT licensed, Java based distributed monitoring and alerting system that turns queries against Elasticsearch, Prometheus, SkyWalking, InfluxDB, MySQL/TiDB, ClickHouse, SqlServer and IoTDB data into alarms, and it is built for operations and development teams that already run a log or metrics stack but lack a matching alerting layer.
read the full frostmourne overview →
More in Infrastructure & Operations
Related comparisons
More Monitoring & Observability projects
Compare either of these against the rest of the Monitoring & Observability field.
Frequently asked questions
Is huginn or frostmourne more popular?
huginn has 49,969 GitHub stars and frostmourne has 1,494. huginn has the larger community by that measure.
Are huginn and frostmourne free?
Both are open source. huginn is licensed under MIT and frostmourne under MIT. Neither carries a licence fee.
What is the difference between huginn and frostmourne?
huginn is written in Ruby and frostmourne 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 frostmourne?
Choose huginn if you want the larger community (49,969 stars) or its MIT licence terms. Choose frostmourne if its feature set, stack or MIT licence fits better. Both are self-hostable.