| Vendor | Signature Class | URL: |
| (n)Code Solutions | Class III or II | https://www.ncodesolutions.com |
| Safe Scrypt | Class III or II | https://www.sifycorp.com |
| e mudhra | Class III or II | https://www.e-mudhra.com |
| Capricorn | Class III or II | https://www.certificate.digital |
| Verasys | Class III or II | https://www.vsign.in/ |
| Pantasign | Class III or II | https://www.pantasign.com |
| IDSign | Class III or II | https://www.idsign.app |
| XtraTrust | Class III or II | https://www.xtratrust.com |
| SignX | Class III or II | https://www.signxca.com/ |
| ProDigiSign | Class III or II | https://www.prodigisign.com/ |
| Care4Sign | Class III or II | https://www.Care4Sign.com/ |
| Speed Sign | Class III or II | https://speedsignca.com/ |
| C-DAC Sign | Class III or II | https://esign.cdac.in/ |
| IDRBT Sign | Class III or II | https://idrbtca.org.in/ |
| NSDL Protean | Class III or II | https://nsdl.co.in/ |
| CSC Sign | Class III or II | https://www.csc.gov.in/ |
| RISL Sign | Class III or II | https://risl.rajasthan.gov.in/ |
| JPSL | Class III or II | https://jioesp.jio.com/ |
| IGCAR | Class III or II | https://igcar.gov.in/ |