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Best Environmental, Social and Governance Reporting Software 2026
Facts read 22 Sep 2026 – 9 Oct 2026
Environmental, Social and Governance reporting tools let organizations gather sustainability data, calculate emissions and assemble disclosures. Their capabilities can include GHG accounting, Scope 3 monitoring, framework support and materiality reviews.
The standings: top 10
| Name | In a line | Record score | Runs on | Facts read |
|---|---|---|---|---|
| 01 Persefoni | Pro is aimed at companies with low to medium operational complexity. | 4.3 | Web, API | 30 Sep 2026 |
| 02 EcoOnline | EcoOnline is intended for multi-site, high-risk operations seeking standardized safety data across locations. | 4.2 | Android, iPhone & iPad, Web | 7 Oct 2026 |
| 03 Arbor | Arbor suits sustainability teams measuring products, company assets and organisational emissions across Scopes 1–3. | 3.8 | Web, API | 9 Oct 2026 |
| 04 Sweep | 3.7 | Web | 7 Oct 2026 | |
| 05 Plan A | Plan A is intended for business clients responsible for corporate emissions measurement, reporting, or reduction. | 3.6 | Web, API | 7 Oct 2026 |
| 06 Watershed | 3.6 | Web, API | 9 Oct 2026 | |
| 07 Supplier.io | Supplier.io suits procurement and sourcing teams measuring supplier diversity, sustainability, spend, and emissions. | 3.5 | Web | 3 Oct 2026 |
| 08 Certainty ESG | 3.0 | Android, iPhone & iPad, Web, Windows | 24 Sep 2026 | |
| 09 Brightest | 2.7 | Web | 24 Sep 2026 | |
| 10 OpenEco | 2.7 | Web | 24 Sep 2026 |
Use the list to compare maker-published pricing, free-plan access, supported platforms and workflow features. When assessing options, look at supplier portals, assurance processes and available reporting exports.
02
EcoOnline
EcoOnline is intended for multi-site, high-risk operations seeking standardized safety data across locations.
AndroidiPhone & iPadWeb Record4.2 Visit
03
Arbor
Arbor suits sustainability teams measuring products, company assets and organisational emissions across Scopes 1–3.
WebAPI Record3.8 Visit
04
Sweep
Web Record3.7 Visit
05
Plan A
Plan A is intended for business clients responsible for corporate emissions measurement, reporting, or reduction.
WebAPI Record3.6 Visit
7
Supplier.io
Web — Record3.5 Visit Supplier.io suits procurement and sourcing teams measuring supplier diversity, sustainability, spend, and emissions.
Before you choose
Compare free and paid access
Brightest has a no-cost plan, with paid access starting at $5,900 per year. Other products use paid plans, with prices shown as on request or from a stated rate.
Certainty ESG lists pricing from $18 per user per month on an annual term. ESG:ONE lists pricing from £3,000 per year.
Choose a platform that fits your work
Products in the list are available through web, API, iOS, Android or Windows. Arbor provides API and web access, while EcoOnline is available on Android, iOS and web.
Check the platform you need before choosing a product, especially when staff collect or review information away from a desktop.
Check emissions coverage
This category compares capabilities for GHG accounting and Scope 3 tracking. Arbor is presented as software that measures emissions from companies and products.
Look for the emissions functions that match your reporting process and the activity data you need to manage.
Review materiality and frameworks
The comparison includes framework coverage and materiality assessment. These fields indicate whether a product aligns with the reporting structures and assessment tasks your organization uses.
Before selecting software, examine the product details for the frameworks and materiality process you require.
Plan supplier and assurance work
Supplier data portals and assurance workflows appear among this list's comparison fields. They matter when information comes from suppliers or needs a review step before publication.
Check how a tool handles supplier submissions and assurance tasks alongside your internal process.
Confirm reporting exports
Reporting exports are part of the comparison. Confirm that the formats and handoff process fit the reports your organization prepares.
A web product such as IBM Envizi, Greenly or KEY ESG may suit teams that work in a browser; verify export details before choosing.
Questions
Is free ESG reporting software available?
Yes. Brightest provides a free plan, and its paid access begins at $5,900 per year.
What device and system options are available?
The list represents web, API, iOS, Android and Windows access.
What emissions work can ESG software cover?
GHG accounting and Scope 3 tracking appear in the comparison. Arbor measures emissions for companies and products.
Do these tools support supplier information?
Supplier data portals are included among the comparison fields. Check each product's details for the supplier workflow you need.
Can ESG software support assurance work?
Assurance workflows are included as a comparison field. Review how a product handles the assurance steps in your process.
How is pricing shown?
Pricing may be a free plan, a paid plan with a stated starting rate, or pricing on request. Examples include Certainty ESG from $18 per user per month annually and ESG:ONE from £3,000 per year.
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