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Best Plan A Alternatives in 2026

12 apps from carbon accounting software ranked against Plan A on the same published basis.

  1. 1
    CarbonTool Free plan apiWeb $166.67/mo8.2
    Plan A vs CarbonTool
  2. 2
    Persefoni Free plan apiWeb Free7.9
    Plan A vs Persefoni
  3. 3
    Carbonfact Free plan apiWeb Free7.4
    Plan A vs Carbonfact
  4. 4
    ACT Group Decarbonization Platform Web 7.3
    Plan A vs ACT Group Decarbonization Platform
  5. 5
    Normative Web 7.1
    Plan A vs Normative
  6. 6
    Watershed Web 7.0
    Plan A vs Watershed
  7. 7
    Sweep Web 6.9
    Plan A vs Sweep
  8. 8
    SINAI Technologies Web 6.8
    Plan A vs SINAI Technologies
  9. 9
    CarbonAnalytics Free trial apiWeb £69.99/mo6.8
    Plan A vs CarbonAnalytics
  10. 10
    Greenio Free plan apiWeb ₹2,999/mo6.8
    Plan A vs Greenio
  11. 12
    CO2 AI Free trial apiWeb 6.6
    Plan A vs CO2 AI
  12. 13
    NetNada Web 6.3
    Plan A vs NetNada
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