CarbonInk

5.9easy start · #16 of 29
in Carbon Accounting Software

Runs on Mac, Windows.

CarbonInk is ranked #16 of 29 in carbon accounting software on The Geeks Club. It runs on macOS, Windows. There is a free plan.

CarbonInk plans and pricing

Free Free No account · no cloud · no subscription github.com · 8 Oct 2026

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Purpose: CarbonInk is a free, open-source desktop tool for greenhouse-gas accounting.
Offline use: The app runs fully offline, and its README says user data never leaves the device.
Inventory: It tracks emission sources, activity data, and pinned emission factors for Scope 1, 2, and 3.
AI extraction: AI can extract activity data from utility bills, fuel receipts, freight, travel, and purchase documents using the user's own LLM API key.
Disclosure workflows: Users can fill customer or rating-agency disclosure forms from their inventory and collect supplier Scope 3 Category 1 data.
Reporting: The app produces a one-click ISO 14064-1 inventory report in PDF format.
Integrations: A built-in MCP server exposes inventory data to Claude, Cursor, and Pi.
License: CarbonInk is licensed under the MIT License.
Download: The README directs users to the releases page for macOS and Windows builds and says no activation key is required.
Price from: Free

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