G2 Vendor Directory

123FormBuilder vs. Intellistack

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

123FormBuilder

Timisoara, Romania

Intellistack

Fishers, IN

Metric123FormBuilderIntellistack
Avg. rating4.54.5
Total reviews1751,098
Review growth (QoQ)-100.0%-75.0%
Products on G215
Categories covered48
Best category rank#76 in Online Form Builder#10 in Salesforce CRM Document Generation
Small Business62.6%59.7%
Mid-Market21.6%31.4%
Enterprise15.8%8.9%