Best Greenio Alternatives in 2026
Updated
20 apps from carbon accounting software ranked against Greenio on the same published basis.
- 1Greenio vs Carbonfact
- 2Greenio vs CarbonTool
- 4Greenio vs Persefoni
- 5Greenio vs CO2 AI
- 6Greenio vs Normative
- 7Greenio vs Plan A
- 8Greenio vs BigMile
- 9Greenio vs CarbonAnalytics
- 10Greenio vs CarbonChain
- 11Greenio vs ACT Group Decarbonization Platform
- 12Greenio vs CarbonInk
- 13Greenio vs CarbonSmart
- 14Greenio vs Carbonstop Ccloud
- 15Greenio vs EcoReko
- 16Greenio vs Hedgehog Carbon Platform
- 17Greenio vs SINAI Technologies
- 18Greenio vs Sweep
- 19Greenio vs Vaayu
- 20Greenio vs Watershed
- 21Greenio vs 50X Impact
Greenio alternatives compared
| # | App | Score | Free plan | From | Runs on |
|---|---|---|---|---|---|
| 1 | Carbonfact | 7.0 | Free plan | Free | API, Web |
| 2 | CarbonTool | 6.9 | Free plan | $166.67/mo | API, Web |
| 4 | Persefoni | 6.8 | Free plan | Free | API, Web |
| 5 | CO2 AI | 6.4 | No | — | API, Web |
| 6 | Normative | 6.3 | No | — | Web |
| 7 | Plan A | 6.3 | No | — | API, Web |
| 8 | BigMile | 6.1 | No | — | API, Web |
| 9 | CarbonAnalytics | 6.1 | No | £69.99/mo | API, Web |
| 10 | CarbonChain | 6.0 | No | — | API, Web |
| 11 | ACT Group Decarbonization Platform | 5.8 | No | — | Web |
| 12 | CarbonInk | 5.8 | No | — | Windows, Mac |
| 13 | CarbonSmart | 5.8 | No | — | Web |
| 14 | Carbonstop Ccloud | 5.8 | No | — | Web |
| 15 | EcoReko | 5.8 | No | — | Web |
| 16 | Hedgehog Carbon Platform | 5.8 | No | — | Web |
| 17 | SINAI Technologies | 5.8 | No | — | Web |
| 18 | Sweep | 5.8 | No | — | Web |
| 19 | Vaayu | 5.8 | No | — | Web |
| 20 | Watershed | 5.8 | No | — | Web |
| 21 | 50X Impact | 5.7 | No | — | Web |
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Questions about Greenio alternatives
What is the best alternative to Greenio?
Carbonfact, number 1 in carbon accounting software with a score of 7.0 out of 10. The others here: CarbonTool, Persefoni, CO2 AI and 16 more.
What is the best free alternative to Greenio?
Carbonfact is the best-ranked alternative with a free plan. 3 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: documentation depth, a free tier and the platforms it runs on.