Alma SIS vs Arbor Comparison: Everything You Need to Know Before Choosing

Arbor is an automated carbon accounting and reporting platform that helps companies calculate greenhouse gas emissions across their operations and supply chains. As investors, customers and regulators increasingly expect businesses to disclose their climate impact, many organisations struggle to gather the underlying data, apply appropriate emission factors and produce credible reports without dedicated sustainability teams or expensive consultants. Arbor addresses this by automating much of the measurement process, drawing on financial and operational data to estimate emissions and presenting the results in a structured, auditable format. Its approach focuses on making carbon accounting accessible and repeatable, so companies can move from a one-off footprint exercise to ongoing tracking that informs reduction strategies, supplier engagement and strategic decisions, with methodologies aligned to recognised frameworks such as the Greenhouse Gas Protocol. The platform is intended to reduce reliance on external consultants while still producing results that can withstand scrutiny from auditors, investors and customers. Key capabilities include calculation of Scope 1, 2 and 3 emissions, with Scope 3 estimates often derived from spend and activity data, alongside product-level footprinting that can support life cycle assessment work. Data connectors and uploads allow information from accounting systems, utility bills and procurement records to be ingested with minimal manual effort, and emission factor libraries are applied automatically. Dashboards display emissions by category, business unit and time period, helping teams identify hotspots and prioritise reduction initiatives, while reporting outputs support disclosures to frameworks such as CDP and requirements associated with emerging regulations. Collaboration features allow finance, operations and sustainability colleagues to contribute data and review results. The platform is delivered as cloud software and is suited to small and mid-sized companies, consumer brands, manufacturers and technology businesses beginning or maturing their climate reporting programmes. Pricing starts from around USD 100; there is no free trial and no permanently free version.