VitalSource vs. iSpring
Side-by-side across both vendors’ full G2 portfolios — reviews, ratings and category coverage aggregated to the company, not a single product.
| Metric | VitalSource | iSpring |
|---|---|---|
| Avg. rating | 4.5 | 4.6 |
| Total reviews | 21 | 1,108 |
| Review growth (QoQ) | -100.0% | -16.1% |
| Products on G2 | 1 | 5 |
| Categories covered | 4 | 18 |
| Best category rank | #10 in Course Authoring | #3 in Course Authoring |
| Small Business | 14.3% | 44.9% |
| Mid-Market | 9.5% | 35.2% |
| Enterprise | 76.2% | 19.9% |