Hey PH! I'm the maker of CarbonInk 👋 I built it after watching small suppliers and consultants get squeezed between $500–2000/mo carbon accounting SaaS and spreadsheet hell. CarbonInk is the boring-but-honest middle: a desktop app, free and open source under MIT. What it does: • Local-first — your inventory lives in a SQLite file on your machine; runs fully offline. No account, no cloud, no telemetry. • AI does the grunt work — throw utility bills, fuel receipts, freight and travel docs at it, and it extracts the activity data. Bring your own LLM API key (OpenAI / Anthropic / Gemini / DeepSeek / any OpenAI-compatible). • Audit-ready by design — every number traces back to its source document and a pinned emission factor, with a full audit trail. • One click exports an ISO 14064-1 GHG inventory report (PDF). • Disclosure workflows — fill customer / rating-agency questionnaires from your inventory, and collect Scope 3 Cat 1 data from suppliers via an xlsx round-trip. • For the AI crowd: a built-in MCP server lets Claude / Cursor / Pi query your own emissions data. Stack: Electron + React + SQLite, LLM via BYOK. Everything above runs on your machine. Happy to answer questions — feedback on onboarding and the emission-factor matching flow is especially welcome. Site: https://carbonink.xyz Source: https://github.com/lxzxl/carbonink

CarbonInk

Free, open-source carbon accounting — fully offline

Free, open-source carbon accounting — fully offline