Best Carbon Accounting Software - Page 10

How Many Carbon Accounting Software Products Does G2 Track?

Total Products under this Category: 204

Category Stats (Nov 2026)

  • Average Rating: 4.62/5 (↓0.01 vs Oct 2026) The average rating of products in this category, based on all submitted ratings
  • Top Trending Product: Intelex EHSQ (+0.79%) - Among all products in this category, Intelex EHSQ recorded the largest rating increase compared to last month

Last updated: November 12, 2026

How Does G2 Rank Carbon Accounting Software Products?

Why You Can Trust G2's Software Rankings:

  • 30 Analysts and Data Experts
  • 3,300+ Authentic Reviews
  • 204+ Products
  • Unbiased Rankings

G2's software rankings are built on verified user reviews, rigorous moderation, and a consistent research methodology maintained by a team of analysts and data experts. Each product is measured using the same transparent criteria, with no paid placement or vendor influence. While reviews reflect real user experiences, which can be subjective, they offer valuable insight into how software performs in the hands of professionals. Together, these inputs power the G2 Score, a standardized way to compare tools within every category.

G2 Grid® for Carbon Accounting Software

G2 Grid® for Carbon Accounting Software plotting products by satisfaction and market presence

Highlighted products: Watershed, osapiens, Workiva, Orki, Carbo, Ecologi, Seedling, and carbmee EIS.

Underlying data: [Grid® JSON](https://www.g2.com/categories/carbon-accounting/grids.json?focus%5B%5D=watershed&focus%5B%5D=osapiens&focus%5B%5D=workiva-workiva&focus%5B%5D=orki&focus%5B%5D=carbo&focus%5B%5D=ecologi&focus%5B%5D=seedling&focus%5B%5D=carbmee-eis)

gryn

Who Is the Company Behind gryn?

HelloZero

Who Is the Company Behind HelloZero?

  • Seller: Kynetix
  • Year Founded: 1996
  • HQ Location: London, GB
  • LinkedIn® Page: www.linkedin.com
    20 employees on LinkedIn®

HowGood

HowGood’s data helps consumers and enterprises make the right environmental sustainability and social responsibility decisions.

Who Is the Company Behind HowGood?

  • Seller: HowGood
  • Year Founded: 2007
  • HQ Location: Stone Ridge, US
  • LinkedIn® Page: www.linkedin.com
    56 employees on LinkedIn®

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HuellaSmart

HuellaSmart is carbon management software that helps organizations measure, reduce, and report greenhouse gas emissions. It ensures compliance with standards like GHG Protocol, ISO 14064, and HuellaChile. The Carbon Module streamlines data management, reduces manual work, and enables measurement across multiple scopes, including enterprise-wide emissions, product footprints, and event outputs. The software supports reduction and compensation plans, enabling climate strategies based on verified data. Combining software capabilities with async expert support, HuellaSmart applies methodologies to operational contexts. Its architecture supports inventory management, strategy development, and emissions measurement, delivering accurate, auditable results for third-party verification and compliance with evolving regulations.

Who Is the Company Behind HuellaSmart?

IBM Envizi Emissions API

Who Is the Company Behind IBM Envizi Emissions API?

  • Seller: IBM
  • Year Founded: 1911
  • HQ Location: Armonk, New York, United States
  • LinkedIn® Page: www.linkedin.com
    344,328 employees on LinkedIn®
  • Ownership: SWX:IBM
  • Phone: 1-866-277-7488

ImpactOS

ImpactOS is an easy, fast and free solution to document your real emissions – no expertise required. Additionally, ImpactOS enables large corporations to track sustainability data from all supply chains going as deep as scope 3 emissions. At ImpactOS our mission is to turn sustainability into a competitive advantage, without having to pay an arm and a leg.

Who Is the Company Behind ImpactOS?

  • Seller: AskKauko Oy
  • Year Founded: 2015
  • HQ Location: Helsinki, FI
  • LinkedIn® Page: linkedin.com
    17 employees on LinkedIn®

Kabaun

Kabaun is an open-source and open-data carbon impact analytical solution. Our mission is simple: to support companies in their ecological transition by allowing them to easily and accurately measure, analyze and reduce their carbon emissions.

Who Is the Company Behind Kabaun?

  • Seller: Kabaun
  • Year Founded: 2021
  • HQ Location: Paris, FR
  • LinkedIn® Page: www.linkedin.com
    8 employees on LinkedIn®

Kabon360°

Karbon360° is carbon accounting software that converts energy bills, fuel receipts, and supplier data into emissions reports. The platform automates greenhouse gas calculations across all three scopes, reducing processing time from weeks to hours. Invoice intelligence extracts meter IDs, supplier information, consumption periods, and tariffs from Balkan utility formats while preserving original documents. The software accepts scanned PDFs, photos, and CSVs. Localized emission factors cover Kosovo, Albania, North Macedonia, Montenegro, Serbia, and Bosnia, with European fallbacks updated annually using DEFRA, IPCC, and EEA methodologies. Karbon360° calculates emissions from fuel combustion, purchased energy, and value chain activities while maintaining an audit trail. The platform exports reports aligned with CSRD, ESRS E1, EU Taxonomy, and CBAM standards. The interface operates in Albanian and English.

Who Is the Company Behind Kabon360°?

KlimAPI

Calculate and offset CO2 emissions as they occur. We offer an out-of-the-box 360-degree API-first solution to make your business more sustainable. - Rapidly fast API - Get instant calculation results - Receive offers to offset your emissions - Offset immediately with individual certificates Perfect for logistics, travel platforms, banking products, e-commerce businesses, car rental & sharing, ...

Who Is the Company Behind KlimAPI?

Locus

Locus Technologies is the only scientist-driven software company at the nexus of analytical and field data management, Environmental, Health, and Safety (EHS) compliance, ESG, and water data management. Locus software manages air, water, waste, energy, emissions, site, and incident data within a configurable platform for risk mitigation and regulatory reporting. Locus Technologies develops robust, cloud-native software for EHS compliance, ESG reporting and sustainability disclosures, environmental data management, and water quality analysis and monitoring. Our ecosystem of 30+ pre-built applications include air quality data management, water data management, waste management, refrigerant management, sustainable construction, and safety/incident management. As a metadata-driven multitenant platform, Locus is also the most configurable environmental software available, empowering clients to tailor Locus technology to very specific use cases or build their own apps on the platform. Our company and products are audited every 12 months to maintain SOC 1 Type 2 and SOC 2 Type 2 third-party attestations. Locus applications feature robust tools for mobile data collection, environmental sample planning, IoT and smart sensor integrations, permit tracking, tasks and workflow, data visualization, GIS mapping, mandatory and voluntary reporting frameworks, and much more. When the health of people, profits, brands, and the planet are on the line, there’s no margin of error or room for doubt. That’s why Locus tackles the most consequential engagements – where accuracy and credibility cannot be compromised. Our software supports many of the largest energy, chemical, manufacturing, agriculture, and construction companies, as well as government and utilities organizations. Locus Technologies was founded in 1997 and is headquartered in California’s Silicon Valley.

Who Is the Company Behind Locus?

Loginex

Who Is the Company Behind Loginex?

  • Seller: Loginex
  • Year Founded: 2020
  • HQ Location: Dhaka, BD
  • LinkedIn® Page: www.linkedin.com
    11 employees on LinkedIn®

Lucent Sky ESG

Lucent Sky ESG is a comprehensive carbon data management platform, designed to assist small to medium sized businesses in tracking, visualising and reporting Scope 1, 2, and core Scope 3 emissions.

Who Is the Company Behind Lucent Sky ESG?

Lauren Worth
LW
Researched and written by Lauren Worth
Updated October 3, 2024