Erlang/OTP 17.5 has been released!

OTP 17.5 Readme File

OTP 17.5 Source File (95446113)

OTP 17.5 Windows 32-bit Binary File (95446113)

OTP 17.5 Windows 64-bit Binary File (95622661)

OTP 17.5 HTML Documentation File (33510258)

OTP 17.5 Man Pages File (1363320)

Some highlights of the release are:

ERTS: Added command line argument option for setting the initial size of process dictionaries.

Diameter: configurable incoming_max len and string_decode for diameter messages

Bugfixes and minor small features in applications such as compiler, common_test, crypto, debugger, eldap, erts, hipe, inets, ssh, ssl, ...

43 contributions from 32 different contributors

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.

Source Versions and Windows Binaries for Patches

Information about all released OTP versions since OTP 17.0 can be found at the OTP Versions Tree page. This information includes a link to the GitHub source tag, and a link to the README. As of OTP 23, Windows binaries can also be downloaded from here for all patches.

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).