Best Arbor Alternatives in 2026
Updated
20 platforms from carbon accounting software ranked against Arbor on the same published basis.
- 1Arbor vs Carbonfact
- 2Arbor vs CarbonTool
- 3Arbor vs Greenio
- 4Arbor vs Persefoni
- 5Arbor vs CO2 AI
- 6Arbor vs CarbonSmart
- 7Arbor vs Plan A
- 8Arbor vs CarbonAnalytics
- 9Arbor vs GreenStitch
- 10Arbor vs NetNada
- 11Arbor vs BigMile
- 12Arbor vs CarbonChain
- 13Arbor vs EcoReko
- 14Arbor vs Hedgehog Carbon Platform
- 15Arbor vs CarbonInk
- 16Arbor vs ACT Group Decarbonization Platform
- 17Arbor vs Normative
- 18Arbor vs Sweep
- 19Arbor vs TrackZero
- 20Arbor vs Carbon Accounting AI
Arbor alternatives compared
| # | Platform | Score | Free plan | From | Runs on |
|---|---|---|---|---|---|
| 1 | Carbonfact | 7.4 | Free plan | Free | API, Web |
| 2 | CarbonTool | 7.4 | Free plan | $166.67/mo | API, Web |
| 3 | Greenio | 7.3 | Free plan | ₹2,999/mo | API, Web |
| 4 | Persefoni | 7.3 | Free plan | Free | API, Web |
| 5 | CO2 AI | 7.0 | No | — | API, Web |
| 6 | CarbonSmart | 6.9 | No | — | API, self-hosted, Web |
| 7 | Plan A | 6.9 | No | — | API, Web |
| 8 | CarbonAnalytics | 6.8 | No | £69.99/mo | API, Web |
| 9 | GreenStitch | 6.8 | No | $250/mo | API, Web |
| 10 | NetNada | 6.8 | No | — | API, self-hosted, Web |
| 11 | BigMile | 6.7 | No | — | API, Web |
| 12 | CarbonChain | 6.7 | No | — | API, Web |
| 13 | EcoReko | 5.9 | Free plan | €375/mo | Web |
| 14 | Hedgehog Carbon Platform | 5.9 | Free plan | €100/mo | Web |
| 15 | CarbonInk | 5.8 | Free plan | Free | Mac, Windows |
| 16 | ACT Group Decarbonization Platform | 5.5 | No | — | Web |
| 17 | Normative | 5.5 | No | — | Web |
| 18 | Sweep | 5.5 | No | — | Web |
| 19 | TrackZero | 5.4 | No | £24.58/mo | Web |
| 20 | Carbon Accounting AI | 5.3 | No | $390/mo | Web |
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Questions about Arbor alternatives
What is the best alternative to Arbor?
Carbonfact, number 1 in carbon accounting software with a score of 7.4 out of 10. The others here: CarbonTool, Greenio, Persefoni and 16 more.
What is the best free alternative to Arbor?
Carbonfact is the best-ranked alternative with a free plan. 7 of the 20 alternatives here publish a free plan on their own pricing pages.
How are these alternatives ranked?
Ranked on what each maker publishes, open and connectable first: a public API, open-source code, the depth of its documentation and a free tier to try it on. Model lists are sorted by the figure in their title, exactly as each provider publishes it.