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Carbon Accounting Software

Carbon accounting software calculates and tracks an organization's greenhouse gas emissions, usually across Scopes 1, 2 and 3, and supports reporting and reduction planning. Buyers include sustainability, finance and operations teams at SMEs and enterprises. Vendors are listed A–Z with no scores or rankings; see our methodology for how vendors are included.

10 companies · A–Z · Ranked by verified data once availableCompare →
A

Altruistiq

altruistiq.com
Measure, manage, and reduce your company's carbon footprint with Altruistiq's climate intelligence platform. Company websiteSBTi: Not found in SBTi export (checked 2026-10-16) Public sourceHQ: London, United Kingdom Public sourceFounded: 2020, by Saif Hameed Public sourceSource: altruistiq.com
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C

Climatiq

climatiq.io
Measure and embed carbon calculations into any product with Climatiq's emission factor API, PCF Studio, and scientifically vetted datasets. Company websiteFounded: 2021 Company websiteSBTi: Not found in SBTi export (checked 2026-10-16) Public sourceHQ: Berlin, Germany Public sourceSource: www.climatiq.io
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G

Greenly

greenly.earth
Greenly is a Paris-based climate tech company, founded in 2019, whose carbon accounting platform helps organizations from SMEs to large groups measure and reduce their emissions. It also offers ISO-compliant product life-cycle assessment and environmental product declarations. Greenly says it has 4,000 customers in more than 30 countries across Europe and the United States. Compiled from public sourcesHQ: Paris, France Public sourceFounded: 2019 Public sourceSBTi: Not found in SBTi export (checked 2026-10-16) Public sourceSource: greenly.earth
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IE

IBM Envizi

ibm.com
IBM Envizi offers advanced tools for calculating greenhouse gas emissions, sustainability reporting, and decarbonization efforts. Company websiteSBTi: Not found in SBTi export (checked 2026-10-16) Public sourceSource: www.ibm.com
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N

Normative

normative.io
Normative is a Stockholm carbon accounting company founded in 2014. It calculates, reports and helps reduce Scope 1, 2 and 3 emissions, and every account includes a named climate strategy advisor. In 2026 Normative and Greenly announced they were joining forces. Normative's near-term and net-zero targets are validated by the SBTi. Compiled from public sourcesHQ: Stockholm, Sweden Company websiteFounded: 2014 Company websiteSBTi: Near-term: Validated Targets; Net-zero: Validated Targets (SBTi entity: Normative) Public sourceSource: normative.io
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P

Persefoni

persefoni.com
Persefoni is climate management and carbon accounting software for companies and financial institutions, based in Tempe, Arizona, and founded in 2020. Its platform helps organizations measure their carbon footprint, respond to disclosure requests from customers, investors and regulators, and plan decarbonization. It offers a free entry tier alongside enterprise plans, and its own near-term targets are validated by the Science Based Targets initiative. Compiled from public sourcesHQ: Tempe, Arizona, USA Public sourceFounded: 2020 Public sourceSBTi: Near-term: Validated Targets (SBTi entity: Persefoni) Public sourceSource: www.persefoni.com
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PA

Plan A

plana.earth
Plan A is a Berlin-based carbon accounting and decarbonization software company founded in 2017. Its platform combines emissions measurement, target setting, reduction planning, supplier engagement and sustainability reporting in one place. Plan A says it works with more than 1,500 companies and partners, is supported by a scientific advisory board, and has been a Certified B Corporation since 2021. Compiled from public sourcesHQ: Berlin, Germany Public sourceFounded: 2017 Company websiteSBTi: Not found in SBTi export (checked 2026-10-16) Public sourceSource: plana.earth
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PG

Position Green

positiongreen.com
Streamline ESG reporting, cut emissions, and link sustainability to real results. Company websiteSBTi: Not found in SBTi export (checked 2026-10-16) Public sourceHQ: Malmö, Sweden Company websiteFounded: 2015 Company websiteSource: www.positiongreen.com
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P

Pulsora

pulsora.com
Use Pulsora to centralize and automate ESG metrics collection, measure carbon emissions, prepare reports and disclosures, and track performance. Company websiteSBTi: Not found in SBTi export (checked 2026-10-16) Public sourceHQ: San Mateo, California, USA Company websiteFounded: 2021 Company websiteSource: www.pulsora.com
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UC

Unravel Carbon

unravelcarbon.com
The only sustainability management platform with AI agents to help with sustainability goals and workflow inefficiencies Company websiteSBTi: Not found in SBTi export (checked 2026-10-16) Public sourceHQ: Singapore Public sourceFounded: 2021 Public sourceSource: www.unravelcarbon.com
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Ranked by verified data once available. Until then companies are shown A–Z. Paid placements are labeled Sponsored and never change the order.

Frequently asked questions

What is carbon accounting software?

It is software that collects activity data such as energy use, travel and purchases, applies emission factors, and produces a greenhouse gas inventory for reporting and target tracking.

What are Scope 1, 2 and 3 emissions?

Under the GHG Protocol, Scope 1 covers direct emissions, Scope 2 covers purchased energy, and Scope 3 covers other indirect emissions across the value chain.

How do I choose carbon accounting software?

Check which scopes and reporting frameworks it supports, how it imports your data, the emission factor sources it uses, and whether results are auditable.

Is carbon accounting software suitable for small businesses?

Some tools are built for SMEs with simpler setup, while others target enterprises with complex supply chains. Compare onboarding effort and pricing models against your needs.

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