Free & open

Sustainability tools, built for business.

Jarrly gives businesses the tools they need to measure, report, and reduce their environmental impact — from carbon accounting and ESG reports to website audits and green hosting checks. All free.

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About

Sustainability made simple, accessible, and free.

Jarrly is a growing suite of free sustainability tools designed for businesses of all sizes. From advanced carbon accounting using EXIOBASE data to quick website energy audits, our platform helps organisations measure and reduce their environmental impact.

Built for researchers, SMEs, developers, and sustainability professionals who need powerful tools they can access from any browser, on any device — no consultants, no subscriptions.

Tools

Free sustainability tools

01

Carbon Calculator

Carbon accounting with two models: EEMRIO via EXIOBASE v3.9.6 (UK/EU, 49 regions × 200 sectors) and USEEIO v2.5 (USA, 402 BEA sectors). Upload final demand data and compute GHG emissions.

Launch tool 02

Green-Gap Assistant

Sustainability compliance for SMEs. Estimate Scope 1, 2 & 3 emissions, get a carbon rating, and receive tailored recommendations.

Launch tool 03

Carbon Auditor

Measure your website's energy footprint. Enter a URL to see page weight, CO₂ per visit, and energy consumption per 1,000 visitors.

Launch tool 04

EcoHost Checker

Verify if your website runs on green energy. Checks hosting providers against The Green Web Foundation's verified database.

Launch tool 05

ESG Report Generator

Generate a professional sustainability report as a downloadable PDF. Includes emissions breakdown, green hosting status, and recommendations.

Launch tool

Features

Why Jarrly?

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100% Free

Every tool is free to use with no sign-up required. No subscriptions, no paywalls, no hidden costs.

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Privacy First

Your data stays in your browser. We don't store personal information or share data with third parties.

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Works Everywhere

All tools run in the browser on any device — desktop, tablet, or phone. No software to install.

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More Coming Soon

We're building new tools regularly. Get in touch to suggest features or shape what we build next.

Contact

Get in touch

Questions, collaboration, or feedback — we'd love to hear from you.