Required libraries: Optional libraries:
  • libtasn1 ASN.1 parsing - a copy is included in GnuTLS
  • p11-kit for PKCS #11 support
  • trousers for TPM support
  • libidn2 for Internationalized Domain Names support
  • libunbound for DNSSEC/DANE functionality
  • zlib for compression

Downloading the GnuTLS library

All the new releases are signed with Nikos' OpenPGP key.
Release Version ABI Location
Current stable3.5.x 3.4.0 (mirror list)
Previous stable3.3.x 3.0.0 (mirror list)

GnuTLS for Windows

Description Location
Latest precompiled version

GnuTLS in other languages than C

Language Location
C++ LibCXX
The GnuTLS distribution also includes a (limited) C++ interface.
Python python-gnutls
PHP PHP5-gnutls
Guile (scheme) Included in the GnuTLS distribution

1. Gmplib 6 is under LGPLv3 or GPLv2. Older versions of gmplib under LGPLv2 are also supported.
2. Stable-next will be the next stable release; while it is believed to be sufficiently stable it is not as well tested as the stable branch.