Live ranking by how often ChatGPT, Perplexity & Google AI name each brand when buyers ask for the best e-signature software. As buyers move to AI to choose, the brands at the top win the customer.
| # | Brand | AI mention share | |
| 🥇 | DocuSign | 100% | |
| 🥈 | GMOサイン | 100% | |
| 🥉 | BIZxDesign | 100% | |
| 4 | クラウドサイン | 80% | |
| 5 | Adobe Sign | 60% | |
| 6 | Hellosign | 40% | |
| 7 | 電子署名サービス | 20% |