The Adobe Approved Trust List (AATL) consists of member organizations from around the world. They provide certificates that enable creation of trusted digital signatures, whenever the signed document is opened in Adobe Reader or Acrobat.
- AC Firmaprofesional
- Almerys
- BUYPASS AS
- Camerfirma
- CertEurope
- Certicamara SA
- Certinomis
- Certizen
- CERTUM (Unizeto Technologies)
- ComSign Ltd.
- CryptoLog International
- Dictao
- DigiCert Inc.
- DigitalSign
- Entrust Inc.
- GlobalSign
- InfoCert
- Intesa
- Izenpe
- Japanese Government (Government Public Key Infrastructure)
- Keynectis
- LAWtrust
- Logius
- LuxTrust
- Proveedor de Certificados (PROCERT), C.A.
- První certifikační autorita, a.s.
- QuoVadis Limited
- SwissSign AG
- Symantec
- United States Federal PKI Authority
- U.S. Government (DoD)
- WISeKey SA


