Zamp vs. Vertex Inc.
Side-by-side across both vendors’ full G2 portfolios — reviews, ratings and category coverage aggregated to the company, not a single product.
| Metric | Zamp | Vertex Inc. |
|---|---|---|
| Avg. rating | 4.7 | 4.4 |
| Total reviews | 52 | 504 |
| Review growth (QoQ) | +166.7% | -100.0% |
| Products on G2 | 1 | 1 |
| Categories covered | 1 | 3 |
| Best category rank | #7 in Sales Tax and VAT Compliance | #2 in Sales Tax and VAT Compliance |
| Small Business | 91.3% | 19.9% |
| Mid-Market | 8.7% | 23.9% |
| Enterprise | 0.0% | 56.2% |