IBM Envizi vs CarbonTool

IBM Envizi9.4Visit CarbonTool9.2Visit

Higher score IBM Envizi #1 in Carbon Accounting Software 9.4/10 Pricing on request ✓ 3 of 3 features Visit IBM Envizi

vs

CarbonTool #3 in Carbon Accounting Software 9.2/10 30-day trial Free trial✓ 3 of 3 features Visit CarbonTool

• IBM Envizi fits best

  Large enterprises needing mature ESG infrastructure

• CarbonTool fits best

  Organizations needing affordable audit-ready accounting

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Side by side

Feature	IBM Envizi 9.4/10 Visit ↗	CarbonTool 9.2/10 Visit ↗
At a glance
Editor score	9.4	9.2
Ranking	#1 in Carbon Accounting Software	#3 in Carbon Accounting Software
Best for	Large enterprises needing mature ESG infrastructure	Organizations needing affordable audit-ready accounting
Pricing model	Paid	Paid
Starting price	—	€2,000/yr
Free plan	Not checked yet	—
Free trial	—	30 days
Deployment	Cloud	Cloud
Platforms	Web	Web
Support	Community, Docs	Email, Live chat
Integrations	10 integrations	9 integrations
Built for	Mid-market, Enterprise	Small business, Mid-market, Enterprise
Features IBM Envizi 3/3 · CarbonTool 3/3
Supplier engagement	✓	✓
Audit trail	✓	✓
API access	✓	✓
Specs
Scope coverage	Scope 1-3	Scope 1-3
Data collection	Both	Both
Emissions factors	Both	Both
Our review
Pros	Covers Scope 1, 2 and 3 emissions with GHG Protocol-aligned methods Automates data ingestion and emissions-factor retrieval across enterprise sources Includes supplier engagement, audit trails, APIs and extensive integrations	Scope 1–3 accounting with 200+ emissions-source templates Supplier surveys, consolidation and major reporting frameworks Audit trail, REST API, OAuth 2.0, webhooks and bulk import
Cons	Pricing is quote-based and requires a sales conversation The Emissions API is priced as a separate module Account-based tiers may be more than smaller teams need	No time-unlimited free plan Core supports single-entity measurement only CSRD reporting starts with the €7,500 Enterprise plan
Our verdict	IBM Envizi is an ESG data management and reporting platform for organizations managing environmental performance, greenhouse gas emissions and sustainability disclosures. It supports Scope 1, 2 and 3 calculation and reporting through a GHG… Read the review →	CarbonTool is a web-based carbon accounting platform for organizations measuring, reporting and reducing greenhouse-gas emissions. It covers GHG Protocol Scope 1, 2 and 3 inventories, with manual entry, spreadsheet import, AI-assisted… Read the review →

Strengths and trade-offs

• IBM Envizi — where it wins

  • Covers Scope 1, 2 and 3 emissions with GHG Protocol-aligned methods
  • Automates data ingestion and emissions-factor retrieval across enterprise sources
  • Includes supplier engagement, audit trails, APIs and extensive integrations

  Where it doesn't

  • Pricing is quote-based and requires a sales conversation
  • The Emissions API is priced as a separate module
  • Account-based tiers may be more than smaller teams need

• CarbonTool — where it wins

  • Scope 1–3 accounting with 200+ emissions-source templates
  • Supplier surveys, consolidation and major reporting frameworks
  • Audit trail, REST API, OAuth 2.0, webhooks and bulk import

  Where it doesn't

  • No time-unlimited free plan
  • Core supports single-entity measurement only
  • CSRD reporting starts with the €7,500 Enterprise plan

• IBM Envizi9.4/10 · Pricing on request

  A broad Scope 1–3 platform for organizations with complex sustainability data needs.

  Visit IBM EnviziFull verdict →
• CarbonTool9.2/10 · 30-day trial

  Broad Scope 1–3 accounting and reporting from €2,000 per organization annually.

  Visit CarbonToolFull verdict →