head to head · open source
Odoo vs guac
Odoo has 54,424 GitHub stars, 33,741 forks, 10,282 open issues and last shipped yesterday. guac has 1,540 stars, 215 forks, 89 open issues and last shipped 2 days ago. Odoo leads on adoption by 3,434% (54,424 vs 1,540 stars). Odoo is written in Python under a custom or non-standard licence; guac is written in Go under Apache-2.0. Odoo has attracted 62% as many forks as stars, guac 14%. Odoo 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
| Odoo | guac | |
|---|---|---|
| GitHub stars | ★ 54K | ★ 1.5K |
| License | Custom / other | Apache-2.0 |
| Written in | Python | Go |
| Last push | 2026-09-17 | 2026-09-16 |
| Forks | ⑂ 34K | ⑂ 215 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Odoo if
- You weight community size — 54K stars and counting
- You want the Custom / other license terms
- Your stack matches Python
- You value the larger contributor base for long-term maintenance
pick guac if
- You want the guac 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 guac fits your workflow better
About Odoo
Odoo is an open source suite of business applications built as modular web apps, forming a full featured ERP when combined. It lives in the Python based ecosystem and provides pre built modules for core business functions including CRM, accounting, inventory, e commerce, and HR, all sharing a unified data model and interface.
About guac
GUAC is an OpenSSF incubating project under the Supply Chain Integrity WG that aggregates software security metadata into a high fidelity graph database. It is written in Go, released under Apache 2.0, and positioned in the software supply chain security ecosystem as the aggregation and synthesis layer of the supply chain transparency model.
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Frequently asked questions
Is Odoo or guac more popular?
Odoo has 54,424 GitHub stars and guac has 1,540. Odoo has the larger community by that measure.
Are Odoo and guac free?
Both are open source. Odoo has no licence declared in this registry, and guac is licensed under Apache-2.0. Both are free to self-host.
What is the difference between Odoo and guac?
Odoo is written in Python and guac 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, Odoo or guac?
Choose Odoo if you want the larger community (54,424 stars) or its Custom / other licence terms. Choose guac if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.