G2 Vendor Directory

KEY ESG vs. Apollo

Side-by-side across both vendors’ full G2 portfolios — reviews, ratings and category coverage aggregated to the company, not a single product.

KEY ESG

London

Apollo

Levent, Istanbul

MetricKEY ESGApollo
Avg. rating4.44.9
Total reviews2163
Review growth (QoQ)—+950.0%
Products on G211
Categories covered33
Best category rank#19 in Carbon Accounting#2 in Energy Management
Small Business38.1%27.0%
Mid-Market52.4%39.7%
Enterprise9.5%33.3%