head to head · open source
huginn vs pmm
huginn has 49,969 GitHub stars, 4,299 forks, 698 open issues and last shipped yesterday. pmm has 1,107 stars, 231 forks, 240 open issues and last shipped yesterday. huginn leads on adoption by 4,414% (49,969 vs 1,107 stars). huginn is written in Ruby under MIT; pmm is written in Go under AGPL-3.0. huginn has attracted 9% as many forks as stars, pmm 21%. pmm 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 | pmm | |
|---|---|---|
| GitHub stars | ★ 50K | ★ 1.1K |
| License | MIT | AGPL-3.0 |
| Written in | Ruby | Go |
| Last push | 2026-09-18 | 2026-09-18 |
| Forks | ⑂ 4.3K | ⑂ 231 |
| 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 pmm if
- You want the pmm feature set and don't need the biggest community
- You prefer the AGPL-3.0 license terms
- Your stack matches Go
- You evaluated both and pmm 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 pmm
Percona Monitoring and Management (PMM) is an open source database monitoring, observability and management tool, licensed AGPL 3.0, that gives MySQL, MongoDB, PostgreSQL, Valkey and Redis operators a single pane of glass over database performance, security and availability.
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Frequently asked questions
Is huginn or pmm more popular?
huginn has 49,969 GitHub stars and pmm has 1,107. huginn has the larger community by that measure.
Are huginn and pmm free?
Both are open source. huginn is licensed under MIT and pmm under AGPL-3.0. Neither carries a licence fee.
What is the difference between huginn and pmm?
huginn is written in Ruby and pmm 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 pmm?
Choose huginn if you want the larger community (49,969 stars) or its MIT licence terms. Choose pmm if its feature set, stack or AGPL-3.0 licence fits better. Both are self-hostable.