Comparison · 2026
CarbonTool vs Greenly: which carbon platform is better?
A head-to-head look at CarbonTool and Greenly on framework coverage, Scope 1–3 depth, supplier data, pricing model, users and region. Both measure emissions credibly — but for most companies CarbonTool is the stronger choice, thanks to broader framework support (including VSME and PCAF), transparent pricing and unlimited users.
The short answer
For most companies, CarbonTool is the stronger choice over Greenly in 2026. Both cover Scope 1, 2 and 3 on the GHG Protocol, but CarbonTool reports across a wider set of frameworks — CSRD, VSME, GRI, CDP, ISSB and PCAF for financed emissions — from a single data backbone, with transparent per-organisation pricing, unlimited users and a free 30-day trial. Greenly is a credible alternative with strong SME onboarding and a solid France/EU presence. But where reporting breadth, predictable cost and giving the whole team access matter most, CarbonTool is the better fit.
Where CarbonTool comes out ahead
Greenly and CarbonTool both replace spreadsheets with an auditable inventory. These are the differences that decide it — for the typical small-to-mid-market buyer and for more complex organisations that need enterprise depth as well:
Broader framework coverage
Both handle CSRD and CDP, but CarbonTool also covers the VSME standard for SMEs, GRI, ISSB and PCAF for financed emissions — all from one data backbone, so you report once across every disclosure you owe.
Transparent, predictable pricing
CarbonTool publishes per-organisation pricing from a free 30-day trial. Greenly pricing is tiered and largely quote-based, so upfront cost comparison is harder.
Unlimited users, no per-seat fees
Finance, operations, procurement and legal all need the data. CarbonTool includes unlimited users at no extra cost, so giving the whole team access is never a budget conversation.
Audit-ready methodology by default
Every figure carries its source, unit, emission factor and data-quality level, backed by 200+ GHG-Protocol emission-source templates and a full audit trail, so the numbers hold up when an auditor asks.
Supplier data without per-seat costs
CarbonTool collects primary Scope 3 data through a supplier portal and Pathfinder guidance, so value-chain engagement is not limited by how many people you can afford to license.
Where Greenly fits
A fair comparison should say where Greenly is a sensible pick. It is an established, well-funded platform, and these are the cases where it earns a place on the shortlist:
Guided SME onboarding
Greenly is built around a smooth onboarding experience for smaller teams running their first footprint, with bank and accounting integrations to bootstrap spend-based estimates quickly.
France & EU presence
France-based with an established European customer base and French-language support — a natural fit for companies wanting a local French partner.
GHG Protocol foundations
Solid Scope 1, 2 and 3 measurement on recognised methodology, with CSRD and CDP support for companies whose reporting needs sit within that scope.
Climate coaching add-ons
Access to climate experts and reduction guidance as part of the engagement, which some first-time teams value alongside the software.
CarbonTool vs Greenly, side by side
Compared on the criteria that matter most. Framework, pricing and region details change frequently — confirm current specifics with each vendor before deciding.
| Criterion | CarbonTool | Greenly |
|---|---|---|
| Frameworks | CSRD, VSME, GRI, CDP, ISSB, PCAF | GHG Protocol, CSRD, CDP |
| Scope 1–3 | Full Scope 1, 2 & 3 | Full Scope 1, 2 & 3 |
| Supplier data | Supplier portal + Pathfinder, primary data with PCAF-style quality scoring | Supplier engagement available; verify current capabilities |
| Pricing model | Transparent per-organisation · from a free 30-day trial | Tiered / quote-based |
| Users | Unlimited users, no per-seat fees | Plan-dependent; verify current limits |
| ERP / data import | SAF-T import (Pro): SAP, Oracle NetSuite, Dynamics 365, QuickBooks; REST API (Enterprise) | Accounting & bank integrations; verify current ERP/API specifics |
| Integrations & API | REST API with OAuth 2.0, read/write, webhooks & bulk import (Enterprise plan) | Integrations available; verify current API specifics |
| Multi-entity | Many entities, consolidation basis, grouping by geography/business unit/division | Verify current multi-entity capabilities |
| Audit & data quality | Source-level traceability, approval workflow, Data Quality Index (DQI), version control | Methodology-based; verify current audit/DQI features |
| Region | Romania, EU, USA | EU (France-based) |
Greenly facts are summarised at a high level from public information and should be verified before publishing. We do not publish competitor prices that are quote-based.
Enterprise-grade capabilities, not just SME onboarding
Greenly is rightly known for smooth onboarding of smaller teams, but CarbonTool is not only an entry-level tool. It carries the depth that larger and more complex organisations need — at transparent per-organisation pricing rather than bespoke quotes. See the full enterprise capabilities for detail:
REST API and real-time integration (Enterprise plan)
A REST API with OAuth 2.0, read and write access, webhooks for real-time changes and bulk import of thousands of data points — connecting CarbonTool to ERP, IoT sensors and supply-chain or vendor systems. Available on the Enterprise plan.
SAF-T accounting import from your ERP (Pro plan)
Import SAF-T XML from SAP, Oracle NetSuite, Microsoft Dynamics 365 and QuickBooks, with automatic supplier and transaction mapping, plus AI-assisted extraction that reads invoices and suggests emission-source mappings. Available from the Pro plan.
Multi-entity consolidation
Run many entities under one company with a defined consolidation basis (for example operational control), and group operations by geography, business unit, division, function or a custom hierarchy.
Audit-grade governance and data quality
Every figure is traceable to its source, with an approval workflow (owners and approvers; pending, approved or rejected), a Data Quality Index scored on a pedigree basis (tier, completeness, consistency, recency, uncertainty), document attachments, comments and report version control.
Multi-framework Data Points — enter once, report everywhere
Data Points map a single time to GRI, SASB, CSRD/ESRS, TCFD and CDP, so you enter data once and report across every framework, with multi-language reports and export to PDF, Excel, CSV and JSON.
CarbonTool — Best for most companies
Our recommended choice for the small-to-mid-market majority. CarbonTool pairs enterprise-grade framework breadth — CSRD, VSME, GRI, CDP, ISSB and PCAF on one data backbone — with transparent per-organisation pricing, unlimited users and a free 30-day Starter plan. Built by BuildGreen on the GHG Protocol with 200+ emission-source templates, a supplier portal and guided Pathfinder setup, it reaches an audit-ready inventory fast, without per-seat fees or a mandatory consulting engagement.
Greenly — Strong SME onboarding, France/EU
A credible carbon accounting platform for SMEs, with smooth onboarding, accounting and bank integrations and an established France/EU presence. It covers Scope 1, 2 and 3 on the GHG Protocol with CSRD and CDP support. CarbonTool matches the integration story — SAF-T ERP import on Pro and a REST API on Enterprise — and typically wins on framework breadth (VSME and PCAF in particular), multi-entity consolidation, audit-grade DQI governance, transparent pricing and unlimited users rather than scaling cost with team size.
Still weighing the wider market? See our best carbon accounting software guide for how both compare against Watershed, Persefoni, Plan A and others.
CarbonTool vs Greenly in Romania, Europe and the USA
Greenly is France-based with a strong EU footprint, which suits companies wanting a French-language partner. CarbonTool is built by the Romania-based BuildGreen team — 15 years and 500+ BREEAM, LEED and EDGE certifications — and serves Romania, the wider EU and the USA. For EU and Romanian companies, that means CSRD and VSME depth from a locally-rooted team; in the USA, the same platform handles California SB 253/261 readiness and customer-driven supplier requests. Across regions, CarbonTool pairs enterprise-grade framework breadth with transparent pricing.
Got more questions?
Can't find what you're looking for? Check the FAQs below, or reach out and we'll get back to you within one business day.
For most companies, yes. CarbonTool covers a broader set of frameworks — CSRD, VSME, GRI, CDP, ISSB and PCAF from one data backbone — with transparent per-organisation pricing, unlimited users and a free 30-day trial. Greenly is a credible alternative with strong SME onboarding and a France/EU presence, but CarbonTool usually wins on framework breadth, predictable cost and giving the whole team access.
CarbonTool is the strongest Greenly alternative for SMEs and mid-market companies. It covers Scope 1, 2 and 3 plus CSRD, VSME, GRI, CDP, ISSB and PCAF, with transparent pricing, unlimited users, a supplier portal and 200+ GHG-Protocol templates. It is built by the Romania-based BuildGreen team and serves Romania, the wider EU and the USA.
Greenly pricing is tiered and largely quote-based, so the cost depends on company size and the plan negotiated — we do not publish a figure that should be confirmed directly with Greenly. CarbonTool, by contrast, publishes transparent per-organisation pricing starting from a free 30-day trial, with unlimited users included so cost does not grow as more of your team needs access.
Yes. CarbonTool supports the VSME (Voluntary standard for SMEs) reporting alongside CSRD, GRI, CDP, ISSB and PCAF, all from a single data backbone. VSME is designed for small and mid-sized companies that need to respond to value-chain data requests without the full weight of CSRD, which is a common gap in tools aimed only at larger enterprises.
Yes — both platforms cover Scope 1, 2 and 3 emissions on the GHG Protocol. The difference is depth: CarbonTool collects primary supplier data through a supplier portal with PCAF-style data-quality scoring, so value-chain emissions are not limited to spend-based estimates, and supplier engagement is not constrained by per-seat licensing.
Yes. CarbonTool offers SAF-T accounting import on the Pro plan — XML from SAP, Oracle NetSuite, Microsoft Dynamics 365 and QuickBooks, with automatic supplier and transaction mapping — and a REST API on the Enterprise plan with OAuth 2.0, read and write access, webhooks and bulk import of thousands of data points for real-time integration with ERP, IoT and supply-chain systems. This is in addition to AI-assisted extraction that reads invoices and suggests emission-source mappings, so integration is not a reason to choose a quote-based competitor.
Both support CSRD, but CarbonTool adds VSME for SMEs, plus GRI, CDP, ISSB and PCAF from the same dataset, with double-materiality support and an audit trail. For European companies that want one platform to cover every disclosure they owe — and predictable pricing while doing it — CarbonTool is the stronger CSRD choice; Greenly remains a solid EU-oriented option.
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