CoStar Group vs. Z57
Side-by-side across both vendors’ full G2 portfolios — reviews, ratings and category coverage aggregated to the company, not a single product.
| Metric | CoStar Group | Z57 |
|---|---|---|
| Avg. rating | 3.7 | 3.8 |
| Total reviews | 193 | 89 |
| Review growth (QoQ) | — | — |
| Products on G2 | 6 | 1 |
| Categories covered | 6 | 3 |
| Best category rank | #5 in Multiple Listing Service (MLS) | #14 in Multiple Listing Service (MLS) |
| Small Business | 47.3% | 85.4% |
| Mid-Market | 32.4% | 11.2% |
| Enterprise | 20.2% | 3.4% |