G2 Vendor Directory

Silent Auction Pro vs. Zeffy

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

Silent Auction Pro

Lake Villa, IL

Zeffy

Montreal, CA

MetricSilent Auction ProZeffy
Avg. rating4.84.9
Total reviews1263,532
Review growth (QoQ)—+790.0%
Products on G211
Categories covered23
Best category rank#14 in Auction#2 in Donor Management
Small Business81.0%94.1%
Mid-Market17.5%5.5%
Enterprise1.6%0.4%