Erlang/OTP 20.3 is a service release containing mostly bug fixes, as well as a few features.

OTP 20.3 Readme File

OTP 20.3 Source File (96826317)

OTP 20.3 Windows 32-bit Binary File (96826317)

OTP 20.3 Windows 64-bit Binary File (99142192)

OTP 20.3 HTML Documentation File (33594990)

OTP 20.3 Man Pages File (1339710)

Erlang/OTP 20.3 is the third 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 20.3
Application(s): ssl
               Added new API functions to facilitate cipher suite
Application(s): erts, observer
               More crash dump info such as: process binary virtual
               heap stats, full info for process causing out-of-mem
               during GC, more port related info, and dirty scheduler
Application(s): inets
               Add support for unix domain sockets in the http client.
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-20.3


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).