Erlang/OTP 20.2 is a service release containing mostly bug fixes, as well as a few features.

OTP 20.2 Readme File

OTP 20.2 Source File (96750935)

OTP 20.2 Windows 32-bit Binary File (96750935)

OTP 20.2 Windows 64-bit Binary File (99062668)

OTP 20.2 HTML Documentation File (33570484)

OTP 20.2 Man Pages File (1337652)

Erlang/OTP 20.2 is the second service release for the 20 major release.
The service release contains mostly bug fixes and characteristics
improvements but also some new features.
Some highlights for 20.2
Application(s): crypto, ssl
               The crypto API is extended to use private/public keys
               stored in an Engine for sign/verify or encrypt/decrypt
               The ssl application provides an API to use this new
               engine concept in TLS.
Application(s): ssh
               SSH can now fetch the host key from the private keys
               stored in an Engine. See the crypto application for
               details about Engines.
Application(s): ssl
               A new command line option -ssl_dist_optfile has been
               added to facilitate specifying the many options needed
               when using SSL as the distribution protocol.
Application(s): stdlib
               Improve performance of the new string functionality
               when handling ASCII characters.


You might need to reinstall the Microsoft redistributables if you are on the latest version of windows.

For installation instructions please consult the README file that is
part of the distribution.
The Erlang/OTP source can also be found at GitHub on the official
Erlang repository, with tag OTP-20.2


Please report any new issues via Erlang/OTPs public issue tracker

We want to thank all of those who sent us patches, suggestions and bug
Thank you!
The Erlang/OTP Team at Ericsson

Compiling Erlang from source

You can build Erlang from source on your own, following the building and installation instructions. Or use the Kerl script. Kerl is a script that lets you easily build Erlang with a few commands. Follow the instructions to build.

Finding a source version

Follow this link that presents all released source versions, a link to the GitHub source tag, and to the README.

Pre-built Binary Packages

Most OS package managers provide pre-built binary packages. You can also download the latest stable releases from Erlang Solutions. Erlang Solutions provides pre-built binary packages for OS X, Windows, Ubuntu, Debian, Fedora, CentOS, Raspbian and other operating systems. 

  • For Homebrew on OS X: brew install erlang
  • For MacPorts on OS X: port install erlang
  • For Ubuntu and Debianapt-get install erlang
  • For Fedorayum install erlang
  • For FreeBSDpkg install erlang


Since OTP 18.0, Erlang/OTP is released under Apache License 2.0. The older releases prior to 18.0 were released under Erlang Public License (EPL), a derivative work of the Mozilla Public License (MPL).